 BITUMINOUS COMPOSITION FOR HIGH MODULE COATINGS
专利摘要:
The invention relates to a bituminous composition for making high modulus mixes. The invention also relates to a high modulus bituminous mix and the use of these mixes, in the preparation of road pavements, in particular in the preparation of base layers or roadbed layers. The invention also relates to a method for transporting and / or storing and / or handling this solid bituminous composition at room temperature and in divided form. 公开号:FR3055630A1 申请号:FR1658334 申请日:2016-09-08 公开日:2018-03-09 发明作者:Gilles Gauthier；Mouhamad MOUAZEN 申请人:Total Marketing Services SA； IPC主号:
专利说明:
Holder (s): TOTAL MARKETING SERVICES Public limited company. Extension request (s) Agent (s): INNOVATION COMPETENCE GROUP. (54) BITUMINOUS COMPOSITION FOR HIGH MODULE COATINGS. FR 3 055 630 - A1 The invention relates to a bituminous composition for manufacturing high modulus asphalt. The invention also relates to a bituminous mix with high modulus and the use of these mixes, in the preparation of road pavements, in particular in the preparation of base layers or of base layers for road pavements. The invention also relates to a method of transport and / or storage and / or handling of this solid bituminous composition at room temperature and in divided form. ICG70099 EN text deposit i BITUMINOUS COMPOSITION FOR HIGH MODULE COATINGS Technical area The present invention relates to the field of bitumens. More specifically, it relates to a bituminous composition making it possible to manufacture coated materials with a high modulus. The invention also relates to a high-modulus bituminous mix and the use of these mixes, in the preparation of road pavements, in particular in the preparation of base layers or of base layers for road pavements. The invention also relates to a method of transport and / or storage and / or handling of this solid bituminous composition at room temperature and in divided form. State of the prior art Numerous studies have focused on improving the mechanical performance of materials used for the construction of roadways in order to increase their resistance to heavy road loads. More particularly, it is known to use so-called “hard” or “hard grade” bitumens, that is to say bitumens having a penetrability measured at 25 ° C. according to standard EN 1426, less than 35 1 / 10 mm, for the manufacture of asphalt mixes with high modulus due to the properties of hard bitumens intrinsically having a high modulus of rigidity with a view to being used on a pavement which has to withstand heavy road loads. In order to increase the hardness of a bitumen, it is known to mix a bitumen of defined grade with a bitumen of harder grade than bitumen of defined grade. However, this process has certain limits: for a significant increase in the hardness of a bitumen, it is necessary to use bitumens of very low penetrability and in large quantities, typically bitumens having a penetrability at 25 ° C ranging from 10 to 20 1/10 mm. ICG70099 FR text deposit However, the supply of hard bitumens is becoming scarce due in particular to their very specific manufacturing process, which only allows them to be obtained in limited quantities and requires the selection of specific crudes. It is also known to add hard bitumen granules or gilsonite to soft bitumens to increase their hardness. However, the availability of these additives is reduced and does not make it possible to obtain bitumens having satisfactory properties in terms of modulus. It is also known to modulate the properties of a bitumen by applying an oxidizing treatment, such as air blowing, which increases the hardness of the bitumen. In fact, blown bitumens also called oxidized bitumens are obtained by blowing air from a bitumen base at temperatures ranging from 240 to 320 ° C. EPI 352,031 teaches a bitumen composition suitable for use in road construction, characterized in that the composition has a softening point of 50 to 75 ° C. This includes: a) a blown bitumen having a penetrability at 25 ° C ranging from 10 to 50 1/10 mm, a Ball-Ring softening temperature (TBA) ranging from 70 to 120 ° C and an IP penetration index (European standard EN 12591 (1999), Appendix B) in the range of 1.0 to 8.5, and b) an asphalt solvent precipitated having a penetration at 25 ° C ranging from 0 to 40 1/10 mm. The use of blown bitumen alone does not allow the production of high modulus asphalt. FR 2 153 751 teaches: on the one hand to subject the residue from the vacuum distillation of crude oil to an oxidation treatment. On the other hand to fractionate the residue from the vacuum distillation of crude oil, identical or not to the previous one, into deasphalted residue and into deasphalting bitumen. One part by weight of the oxidized residue is mixed and 0.5 to 2 parts by weight of the deasphalting bitumen thus obtained, and finally a suitable plasticizing agent is added to this mixture, so as to adjust the hardness of the bituminous binder to the desired value . However, this method involves several processing and recomposition operations which must be adapted according to the original crude oil. ICG70099 FR text deposit It is also known to modulate the properties of a bitumen by mixing with other components. WO 2010/043945 describes a high modulus bituminous mix based on milling materials for recycling pavement materials comprising residual bituminous binder, new aggregates and bituminous filler binder. However, this composition is obtained following several processing and recomposition operations. Such operations are difficult to implement in certain geographic areas where facilities for recycling pavement materials are rare or even non-existent. WO 2010/086561 describes a bituminous mix or bituminous concrete with high modulus based on bituminous binder comprising at least one bitumen and at least one natural or synthetic resin and aggregates. However, due to the difficulty linked to the geographic availability and / or the supply of additives such as resin, this type of composition cannot be used at competitive costs in all the distribution areas where such compositions are required. Therefore, there is a need to provide a bituminous composition having inter alia a high modulus responding to the drawbacks of the prior art mentioned above. More particularly, there is a need to supply in industrial quantities, a bituminous composition having a high modulus, satisfactory for its implementation in the road sector. In addition, it was highlighted the rarefaction of hard bitumens having a high modulus in certain geographical zones, such as for example in the Africa zone and Middle East, because such bitumens are difficult to handle because they need to be heated to high temperatures. Therefore, for use in these geographic areas, they must be transported, which can only be done in melted form, hot, which poses ecological, economic and logistical problems. In general, bitumen is stored and transported hot, in bulk, in tank trucks or by ships at high temperatures of around 120 ° C at ICG70099 FR text deposit 160 ° C. However, the storage and transport of hot bitumen has certain disadvantages. On the one hand, the transport of hot bitumen in liquid form is considered to be dangerous and it is highly regulated from a regulatory point of view. This mode of transport does not present any particular difficulties when the transport equipment and infrastructure are in good condition. Otherwise, it can become problematic: if the tanker is not sufficiently insulated, the viscosity of the bitumen may increase during a journey that is too long. Bitumen delivery distances are therefore limited. On the other hand, keeping the bitumen at high temperatures in the tanks or in the tankers consumes energy. In addition, keeping the bitumen at high temperatures for a long time can affect the properties of the bitumen and thus change the final performance of the mix. To overcome the problems of transport and storage of hot bitumen, packaging allowing the transport and storage of bitumen at room temperature has been developed. This mode of transporting bitumen in room temperature packaging represents only a small fraction of the quantities transported in the world, but it corresponds to very real needs for geographic regions of difficult and expensive access by traditional means of transport. As an example of packaging allowing cold transport currently used, mention may be made of the packaging of bitumen at room temperature in metal drums. This means is increasingly questionable from an environmental point of view because the bitumen stored in barrels must be reheated before its use as a road binder. However, this operation is difficult to implement for this type of packaging and the drums constitute waste after use. On the other hand, the storage of bitumen at room temperature in drums leads to losses because the bitumen is very viscous and part of the product remains on the walls of the drum during transfer to the tanks of the asphalt production units. As for the handling and transportation of bituminous products in these drums, they can be difficult and dangerous if specialized equipment for handling drums is not available from carriers or at the place of use of bitumen. ICG70099 FR text deposit Other examples of packaging include bitumens in the form of granules transported and / or stored in bags, often used in places where the ambient temperature is high. These granules have the advantage of being easy to handle. US 3,026,568 describes bitumen granules covered with a powdery material, such as limestone powder. However, this type of bitumen in granules does not prevent the creep of the bitumen, especially at high ambient temperature. By way of other packaging examples, bituminous compositions comprising a chemical additive in the form of blocks or granules described in WO 2016/016318 and in WO 2016/016320 which make it possible to transport and / or store and / or handle may be cited bitumen at room temperature However, depending on the grades of bitumen used, either the modulus properties of some of these compositions are not sufficiently satisfactory for use on a pavement which has to withstand very heavy road loads, or it becomes difficult to obtain in industrial quantities of hard grade bitumens making it possible to obtain high modulus asphalt. There is also a need to provide a bituminous composition having, inter alia, a high modulus, the transport and / or storage and / or handling of which is simplified whatever the geographical area of its implementation compared with the bituminous compositions described in Fart prior. The Applicant has found that the addition of a specific pitch in a bitumen made it possible to obtain, in industrial quantities, hard bitumens having very satisfactory modulus properties making it possible to satisfactorily solve the problems mentioned above. More particularly, the Applicant has demonstrated that such compositions having very satisfactory modulus properties could be readily available in industrial quantities and in a form which makes it possible to transport it, store it, and handle it at room temperature, even at a temperature high ambient. In this case, the bituminous composition proposed is in divided form and solid at ambient temperature so that it makes it possible to satisfactorily resolve the problems mentioned above. ICG70099 FR text deposit Summary of the invention The invention relates to a bituminous composition characterized in that the composition comprises: a) at least one pitch having a penetrability at 25 ° C ranging from 0 to 20 1/10 mm, a ball and ring softening temperature (TBA) ranging from 115 ° C to 175 ° C, it being understood that the penetrability is measured according to standard EN 1426 and that the TBA is measured according to standard EN 1427, and b) at least one bitumen base. According to a preferred embodiment, the pitch is an oxidized pitch. According to a preferred embodiment, the pitch is present in an amount ranging from 2 to 30% by mass relative to the total mass of the composition. According to a preferred embodiment, the bituminous composition is solid when cold and in divided form, and also comprises at least one chemical additive chosen from an organic compound, a paraffin, a polyphosphoric acid and their mixtures. According to a preferred embodiment, the bituminous composition comprises from 0.1% to 5% by mass, preferably from 0.5% to 4% by mass, more preferably from 0.5% to 2.5% by mass of said chemical additive relative to the total mass of the bitumen base. According to a preferred embodiment, the chemical additive is an organic compound which has a molar mass by mass less than or equal to 2000 gmol ' 1 , preferably a molar mass less than or equal to 1000 gmol' 1 . According to a preferred embodiment, the bituminous composition is in the form of bread or granules. The invention also relates to a process for manufacturing a bituminous composition, this process comprising the following steps: - Heating of the bitumen base b) at a temperature ranging from 140 to 180 ° C, - Introduction of pitch a) in the bitumen base b), - Stirring of the mixture at a temperature ranging from 140 to 180 ° C until a homogeneous mixture is obtained. ICG70099 FR text deposit According to a preferred embodiment of the method, the pitch is introduced in the form of granules. The invention also relates to a kit capable of being used for the manufacture of a bituminous composition as defined above, this kit comprising at least: - a solid bitumen base when cold and in divided form, - a capsule comprising at least one pitch having a penetration at 25 ° C ranging from 0 to 20 1/10 mm, a softening temperature of ball and rings (TBA) ranging from 115 ° C to 175 ° C, it being understood that the penetrability is measured according to the EN standard 1426 and that the TBA is measured according to standard EN 1427 in the form of a granule. According to a preferred embodiment of the kit, the bitumen base cold solid and in divided form is in the form of bread. According to a preferred embodiment of the kit, the cold solid bitumen base and in divided form comprises on one of its faces, a cavity making it possible to accommodate all or part of the capsule. According to a preferred embodiment of the kit, the capsule is housed in whole or in part in said cavity in a removable manner. The subject of the invention is also a process for the preparation of a bituminous composition solid when cold and in divided form comprising at least one bituminous composition and at least one chemical additive chosen from an organic compound, a paraffin, a polyphosphoric acid and their mixtures , the process comprising: - the mixture of at least one bituminous composition and at least one chemical additive chosen from an organic compound, a paraffin, a polyphosphoric acid and their mixtures, to form an additive bituminous composition, - the shaping of the bituminous composition with additives in the form of bread or granules. ICG70099 FR text deposit The subject of the invention is also a method of transporting and / or storing and / or handling the cold bituminous composition in cold form and in divided form, said bituminous composition being transported and / or stored and / or handled in the form of breads or bituminous composition granules which are solid at room temperature. The invention also relates to the use of the bituminous composition described above and in detail below for the manufacture of bituminous mixes or bituminous concretes. The invention also relates to bituminous mixes or concretes comprising the bituminous composition described above and in detail below, and aggregates. The invention also relates to a process for the production of bituminous mixes or bituminous concretes comprising at least one bituminous composition and aggregates, the bituminous composition being chosen from bituminous compositions solid in cold form and in divided form, this process comprising at least the stages of: - heating the aggregates to a temperature ranging from 100 ° C to 180 ° C, - mixing of the aggregates with the bituminous composition, solid when cold and in divided form in a tank such as a kneader or a kneading drum, - obtaining mixes. According to a preferred embodiment, this process does not include a step of heating the bituminous composition solid cold and in divided form before it is mixed with the aggregates. The invention further relates to the use of a pitch having a penetration at 25 ° C ranging from 0 to 20 1/10 mm, a softening temperature of ball and rings (TB A) ranging from 115 ° C to 175 ° C, it being understood that the penetrability is measured according to standard EN 1426 and that TB A is measured according to standard EN 1427 to increase the modulus of a bituminous composition. ICG70099 FR text deposit detailed description The objectives which the applicant has set for itself have been achieved by the development of bitumen compositions comprising a particular pitch enabling the achievement of satisfactory properties for bituminous compositions intended to be used for road applications, in particular a improved module compared to bituminous compositions known from the prior art. They have also been achieved by the use of these bituminous compositions in a divided and solid form at room temperature, giving said compositions improved properties, in particular of module, thus making it possible to transport and / or store and / or to handle more easily compared to the bitumen compositions known from the prior art. A first object of the invention relates to a bituminous composition comprising: a) at least one pitch having a penetrability at 25 ° C ranging from 0 to 20 1/10 mm, a ball and ring softening temperature (TBA) ranging from 115 ° C to 175 ° C, it being understood that the penetrability is measured according to standard EN 1426 and that the TBA is measured according to standard EN 1427, and b) at least one bitumen base. The invention also relates to a process for manufacturing a bitumen composition as described above and in more detail below, this process comprising the following steps: - Heating of the bitumen base b) at a temperature ranging from 140 to 180 ° C, - Introduction of pitch a) in the bitumen base b), - Stirring of the mixture at a temperature ranging from 140 to 180 ° C until a homogeneous mixture is obtained. The expression "between X and Y" includes the limits. This expression therefore means that the target interval includes the values X, Y and all the values going from X to Y. By "bitumen" is meant any bituminous composition consisting of one or more bitumen bases, said composition being intended for road application. ICG70099 FR text deposit By "pitch" is meant according to the present invention, a petroleum distillation residue. According to the invention, the bitumen base is chemically different from the pitch used. Therefore, the bitumen base and the pitch cannot be used as a replacement for the other because their chemical characteristics are different. By "penetrability" is meant here the so-called "needle penetration" measurement which is carried out by means of a standard test NF EN 1426 at 25 ° C (P25). This penetration characteristic is expressed in tenths of a millimeter (dmm or 1/10 mm). The needle penetration, measured at 25 ° C, according to the standard test NF EN 1426, represents the measurement of the penetration into a bitumen sample, after a time of 5 seconds, of a needle whose weight with its support is 100g. The NF EN 1426 standard replaces the NF T 66-004 approved standard of December 1986 with effect from December 20, 1999 (decision of the Director General of AFNOR on November 20, 1999). By “softening point” is meant the so-called “softening point” measurement which is carried out by means of a standard test NF EN 1427. The ring ball softening point corresponds to the temperature at which a steel ball of standard diameter, after having passed through the material to be tested (glued in a ring), reaches the bottom of a standardized vase filled with a liquid which is gradually heated, and in which the device has been immersed. By “module” is meant the measurement defining the ratio of the amplitude of the stress to the amplitude of the deformation in harmonic sinusoidal oscillation which is carried out by means of a standardized test NF EN 14770. The module of the bituminous composition also called complex modulus or modulus of rigidity of the bituminous composition is determined by means of a dynamic shear rheometer. For this, a series of sinusoidal deformations of defined frequency are applied to the sample maintained at a defined temperature. According to standard NF EN 14770, the complex modulus of the bituminous composition is determined for a sinusoidal deformation of frequency between 0.1 and 10 Hz at a temperature ranging from 5 to 85 ° C. In the invention, the complex modulus of the bituminous composition was determined for a sinusoidal deformation of frequency 10 Hz at a temperature of 15 ° C and also at a temperature of 60 ° C. To determine the modulus of the bituminous composition, the bituminous composition is placed between two parallel planes, one fixed, the other mobile. The upper amount imposes the shear deformation, the resulting deformation is noted. ICG70099 FR text deposit By “modulus of coated materials”, we mean the measurement of the complex modulus of rigidity of bituminous coated materials according to standard NF EN 13108-1. In the invention, the complex modulus of bituminous mixes has been determined for a sinusoidal deformation of frequency 10 Hz at a temperature of 15 ° C. According to one embodiment of the invention, the pitch is in the form of granules before its introduction into the heated bitumen base. Such an embodiment facilitates the handling of the components and the implementation of the method. According to one embodiment of the invention, the pitch is a blown pitch. Within the meaning of the invention, the terms "blown pitch" and "oxidized pitch" will be used independently of one another. According to one embodiment of the invention, the bituminous composition comprises from 2 to 30% by mass of pitch relative to the total mass of the composition, preferably from 3 to 20% by mass of pitch relative to the total mass of the composition. The expression “consists essentially of” or “consists essentially of” followed by one or more characteristics, signifies that may be included in the process or the material of the invention, in addition to the components or steps explicitly listed, components or steps which do not significantly modify the properties and characteristics of the invention. Pitch According to the French dictionary, "pitch" means a residue from the distillation of petroleum tar, petroleum, coal, wood or other organic molecules. The invention relates here to petroleum distillation residues, also called "oil pitch". For the purposes of the invention, the terms "pitch", "oil pitch" and "deasphalting pitch" will be used independently of one another. The pitches can be obtained by conventional refinery manufacturing processes. The manufacturing process corresponds to the succession of a distillation ICG70099 FR atmospheric text deposition and vacuum distillation. First, the crude oil is subjected to distillation at atmospheric pressure, which leads to the production of a gas phase, various distillates and an atmospheric distillate residue. Then, the residue from atmospheric distillation is itself subjected to distillation under reduced pressure, called vacuum distillation, which makes it possible to separate a heavy diesel fuel, various cuts of distillais and a residue of vacuum distillation. This vacuum distillation residue contains "pitch oil" in varying concentrations. There are two ways to obtain "oil pitch": 1st process: The vacuum distillation residue is subjected to a desalphating operation by the addition of an appropriate solvent, such as propane, which thus makes it possible to precipitate the pitch and to separate it from light fractions such as deapphalted oil. 2 nd method: The vacuum distillation residue is subjected to solvent extraction, and more specifically to furfural. This heterocyclic aldehyde has the particularity of selectively solubilizing aromatic and polycyclic compounds. This process thus makes it possible to eliminate the aromatic extracts and to recover the "oil pitch". According to one embodiment, the pitch is an oxidized pitch. Preferably, the oxidized pitch according to the invention is obtained by oxidation of a mixture comprising pitch and a diluent, such as a light gasoline, also called “fluxing agent” subjected to an oxidation operation in a blowing tower in presence of a catalyst, at a fixed temperature and at a given pressure. For example, oxidized pitches can be manufactured in a blowing unit, by passing a flow of air and / or oxygen through a starting pitch. This operation can be carried out in the presence of an oxidation catalyst, for example phosphoric acid. Generally, the oxidation is carried out at high temperatures, of the order of 200 to 300 ° C, for relatively long periods typically between 30 minutes and 2 hours, continuously or in batches. The duration and the temperature of oxidation are adjusted according to the properties targeted for the oxidized pitch and according to the quality of the starting pitch. ICG70099 FR text deposit The mechanical qualities of pitches are generally assessed by determining a series of mechanical characteristics by standardized tests, the most widely used of which are the needle penetration expressed in 1/10 mm and the softening point determined by the ball and ring test. , also called ball and ring softening temperature (TBA). According to one embodiment of the invention, the pitch exhibits needle penetration at 25 ° C from 0 to 20 1/10 mm, preferably from 0 to 15 1/10 mm, more preferably from 0 to 10 1 / 10 mm, it being understood that the penetrability is measured according to standard EN 1426. According to one embodiment of the invention, the pitch has a softening point between 115 ° C and 175 ° C. Among examples of pitches used in the invention, there are pitches having respectively a softening point between 115 ° C and 125 ° C, between 135 and 145 ° C or even between 165 and 175 ° C. Adding a pitch with the mechanical characteristics presented above in a bituminous composition makes it possible to improve the modulus properties of said bituminous composition and also to improve the modulus properties of bituminous mixes. In addition, the addition of pitch according to the invention to a bituminous composition makes it possible to reduce the penetrability and to increase the ball-ring softening temperature of said bituminous composition while maintaining the viscosity of said bituminous composition relative to a composition. bituminous without pitch. According to an embodiment of the invention, the pitch is solid when cold and in divided form. This shape facilitates the handling of pitch for its implementation in the manufacture of the bituminous composition. The term "solid pitch when cold and in divided form" means a pitch which is solid at room temperature and which is conditioned in a divided form, that is to say in the form of units which are distinct from each other, for example granules. According to an embodiment of the invention, the cold solid pitch is in the form of granules. ICG70099 FR text deposit The pitch granules according to the invention can have, within the same population of granules, one or more shapes chosen from a cylindrical, spherical or ovoid shape. More specifically, the pitch granules according to the invention preferably have a cylindrical or spherical shape. According to one embodiment of the invention, the size of the pitch granules is such that the longest average dimension is preferably less than or equal to 50 mm, more preferably from 2 to 30 mm. For example, the use of a die makes it possible to control the manufacture of granules of a chosen size. A sieving makes it possible to select granules according to their size. To allow the formation of pitch granules which do not adhere to each other and resist compression during storage, it may be advantageous to coat all or part of the pitch granule surface with an anti-caking agent. Pitch, in the form of granules which may be covered by an anti-caking compound, is easy to handle after a prolonged period of transport and / or storage. Method of manufacturing a bituminous composition: The invention also relates to a process for manufacturing a bituminous composition comprising at least one pitch a) and at least one bitumen base b), as they have been defined above. This process comprising at least the steps of: - Heating of the bitumen base b) at a temperature ranging from 140 to 180 ° C, Introduction of pitch a) in the bitumen base b), Stirring of the mixture at a temperature ranging from 140 to 180 ° C until a homogeneous mixture is obtained. It has surprisingly been found that the pitch mixes perfectly with the bitumen base. Advantageously, the pitch does not need to be heated before being added to the bitumen base. Although the pitch usually has a melting temperature above 220 ° C, it dissolves in bitumens at the usual temperatures for preparing ICG70099 FR deposit text bituminous compositions. On the other hand, the hard bitumens must be preheated to be incorporated into a bituminous composition. The process for manufacturing the bituminous composition is easy to implement and does not require hot transporting over long distances the pitch intended to improve the properties of the bitumen base, unlike the bitumen bases of "hard" grade used in prior art. Advantageously, a bitumen base produced in the application area can be used and its properties improved by the addition of pitch. Bituminous composition, solid when cold and in divided form The bituminous composition according to the invention can be in solid form when cold and in a divided form. By “cold solid bitumen” is meant a bitumen having a solid appearance at ambient temperature whatever the transport and / or storage conditions. More specifically, the term solid bitumen at room temperature means a bitumen which retains its solid appearance throughout transport and / or storage at room temperature, that is to say a bitumen which does not flow at room temperature under its own weight and moreover, which does not creep when it is subjected to pressure forces resulting from the conditions of transport and / or storage. According to one embodiment, the cold bituminous composition in cold form and in divided form comprises: a) at least one pitch having a penetrability at 25 ° C ranging from 0 to 20 1/10 mm, a ball and ring softening temperature (TBA) ranging from 115 ° C to 175 ° C, it being understood that the penetrability is measured according to standard EN 1426 and that the TBA is measured according to standard EN 1427, b) at least one bitumen base, and c) at least one chemical additive. Within the meaning of the invention, the cold bituminous composition in cold form and in divided form is also called "additive bituminous composition". ICG70099 FR text deposit According to one embodiment, the bituminous composition according to the invention solid when cold and in divided form comprises at least one chemical additive chosen from: an organic compound, a paraffin, a polyphosphoric acid and their mixtures. In particular, the solid bituminous composition and in divided form comprises at least one chemical additive in an amount suitable so that its penetrability is preferably from 5 to 70 l / 10mm, preferably from 10 to 60 l / 10mm, it being understood that the penetrability is measured at 25 ° C according to standard EN 1426. Another object relates to the use of a pitch having a penetrability at 25 ° C ranging from 0 to 20 1/10 mm, a ball and ring softening temperature (TBA) ranging from 115 ° C to 175 ° C, it being understood that the penetrability is measured according to standard EN 1426 and that TB A is measured according to standard EN 1427 to increase the modulus of a bituminous composition. Bitumen base Within the meaning of the invention, the terms “bitumen” and “road bitumen” are used, in an equivalent manner and independently of one another. By "bitumen" or "road bitumen" is meant all bituminous compositions consisting of one or more bitumen bases and optionally comprising one or more chemical additives and / or one or more elastomers, said compositions being intended for road application. Among the bitumen bases which can be used according to the invention, mention may be made first of all of bitumens of natural origin, those contained in deposits of natural bitumen, of natural asphalt or of the tar sands and of the bitumens from the refining of crude oil. . The bitumen bases according to the invention are advantageously chosen from bitumen bases originating from the refining of crude oil. The bitumen bases can be chosen from bitumen bases or mixtures of bitumen bases originating from the refining of crude oil, in particular bitumen bases containing asphaltenes. ICG70099 FR text deposit The bitumen bases can be obtained by conventional methods of manufacturing bitumen bases in a refinery, in particular by direct distillation and / or vacuum distillation of petroleum. These bitumen bases can be optionally visbreaked and / or deasphalted and / or air-rectified. It is common to carry out vacuum distillation of atmospheric residues from the atmospheric distillation of crude oil. This manufacturing process therefore corresponds to the succession of atmospheric distillation and vacuum distillation, the feedstock feeding the vacuum distillation corresponding to atmospheric residues. These vacuum residues from the vacuum distillation tower can also be used as bitumens. It is also common to inject air into a feed usually consisting of distillates and heavy products from vacuum distillation of atmospheric residues from petroleum distillation. This process makes it possible to obtain a blown, or semi-blown or oxidized or air-rectified or partially air-rectified base. The different bitumen bases obtained by the refining processes can be combined with each other to obtain the best technical compromise. The bitumen base can also be a bitumen recycling base. Bitumen bases can be hard grade or soft grade bitumen bases. According to the invention, for the conventional methods for manufacturing bitumen bases, the operation is carried out at manufacturing temperatures between 100 ° C and 200 ° C, preferably between 140 ° C and 200 ° C, more preferably between 140 ° C and 170 ° C, and with stirring for a period of at least 10 minutes, preferably between 30 minutes and 10 hours, more preferably between 1 hour and 6 hours. The term “manufacturing temperature” means the heating temperature of the bitumen base (s) before mixing, as well as the mixing temperature. The temperature and the duration of heating vary according to the quantity of bitumen used and are defined by standard NF EN 12594. Preferably, the bitumen base used in the invention has a needle penetration measured at 25 ° C according to standard EN 1426 from 30 to 330 1/10 mm, preferably from 30 to 220 1/10 mm. ICG70099 FR text deposit According to one embodiment of the invention, the bitumen base can also comprise at least one known bitumen elastomer such as the copolymers SB (block copolymer of styrene and butadiene), SB S (block copolymer of styrene butadiene-styrene block) , SIS (styrene-isoprene-styrene), SBS * (styrene-butadiene-styrene block copolymer in star), SBR (styrene-b-butadiene-rubber), EPDM (modified ethylene propylene diene). These elastomers can also be crosslinked according to any known method, for example with sulfur. Mention may also be made of the elastomers produced from styrene monomers and butadiene monomers allowing crosslinking without crosslinking agent as described in documents WO2007 / 058994, WO2008 / 137394 and by the applicant in patent application WO11 / 013073. According to one embodiment of the invention, the bituminous composition comprises of 0.5% to 15% by mass, preferably from 1% to 15% by mass, more preferably from 2% to 12% by mass of elastomer relative to the total mass of the bituminous composition. Additive The chemical additive is chosen from: an organic compound, a paraffin, a polyphosphoric acid and their mixtures. In one embodiment of the invention, the chemical additive is an organic compound. Advantageously, the organic compound has a molar mass less than or equal to 2000 gmol ' 1 , preferably a molar mass less than or equal to 1000 gmol 1 . In this first embodiment, according to a first variant, the organic compound is a compound of general formula (I): Arl-R-Ar2 (I), in which: ICG70099 FR text deposit • Arl and Ar2 independently of one another represent a benzene ring or a system of condensed aromatic rings of 6 to 20 carbon atoms, substituted by at least one hydroxyl group, and • R represents a divalent radical optionally substituted, the main chain of which comprises from 6 to 20 carbon atoms and at least one group chosen from amide, ester, hydrazide, urea, carbamate, anhydride functions. Preferably, Arl and / or Ar2 are substituted by at least one alkyl group of 1 to 10 carbon atoms, advantageously in one or more positions ortho with respect to the hydroxyl group (s), more preferably Arl and Ar2 are 3,5dialkyl-4-hydroxyphenyl groups, advantageously 3,5-di- / er / -butyl-4hydroxyphenyl groups. Preferably, R is in the para position with respect to a hydroxyl group of Arl and / or Ar2. Advantageously, the compound of formula (I) is 2 ’, 3-bis [(3- [3, 5-di- / er / -butyl-4hy droxy pheny 1] propi ony 1)] propi onohy drazi de. According to a second variant of this first embodiment, the organic compound is a compound of general formula (II): R- (NH) „CONH- (X) m -NHCO (NH)„ - R '(II), in which, - the groups R and R ’, identical or different, contain a saturated or unsaturated, linear, branched or cyclic hydrocarbon chain, comprising from 1 to 22 carbon atoms, optionally substituted, and optionally comprising heteroatoms, rings and / or heterocycles; - Group X contains a hydrocarbon chain, saturated or unsaturated, linear, cyclic or branched, comprising from 1 to 22 carbon atoms, optionally substituted, and optionally comprising heteroatoms, rings and / or heterocycles; - n and m are integers having a value of 0 or 1 independently of each other. ICG70099 FR text deposit According to this variant, when the integer has a value of 0, then the groups R (NH) nCONH and NHCO (NH) n -R 'are covalently linked by a hydrazide CONH-NHCO bond. The group R, or the group R ′, then comprises at least one group chosen from: a hydrocarbon chain of at least 4 carbon atoms, an aliphatic ring of 3 to 8 atoms, an aliphatic condensed polycyclic system, partially aromatic or entirely aromatic, each cycle comprising 5 or 6 atoms. Still according to this variant, when the integer has a value of 1, then the group R, the group R 'and / or the group X, comprises at least one group chosen from: a hydrocarbon chain of at least 4 carbon atoms , an aliphatic ring of 3 to 8 atoms, an aliphatic condensed polycyclic system, partially aromatic or entirely aromatic, each cycle comprising 5 or 6 atoms. Preferably, the group R and / or R ′ comprises an aliphatic hydrocarbon chain of 4 to 22 carbon atoms, in particular, chosen from the groups C4H9, C5H11, C9H19, C11H23, C12H25, C17H35, C18H37, C21H43, C22H45. Preferably, the group X represents a linear, saturated hydrocarbon chain comprising from 1 to 22 carbon atoms. Preferably, the group X is chosen from the groups C2H4, C3H6. Preferably, the group X can also be a cyclohexyl group or a phenyl group, the radicals R- (NH) n CONH- and NHCO (NH) n -R'- can then be in the ortho, meta or para position. Furthermore, the radicals R- (NH) n CONH- and NHCO (NH) n -R'- can be in the cis or trans position relative to each other. In addition, when the radical X is cyclic, this ring can be substituted by groups other than the two main groups R- (NH) n CONH- and -NHCO (NH) n 30 R '. Preferably, the group X comprises two cycles of 6 carbons linked by a CH 2 group, these cycles being aliphatic or aromatic. In this case, the ICG70099 FR text deposit group X is a group comprising two aliphatic rings linked by a group CH 2 optionally substituted, for example: X ~ v or Advantageously, according to this variant, the organic compound is a compound of general formula (II) chosen from hydrazide derivatives such as the compounds C5H11CONH-NHCO-C 5 Hn, C9H19-CONH-NHCO-C9H19, ChH 2 3-CONH-NHCO -CiiH 23 , Ci 7 H3 5 -CONH-NHCO-Ci7H 35 , or C21H43-CONH-NHCO-C21H43; diamides such as N, N'-ethylenededi (stearamide) of formula C17H35-CONH-CH2-CH2-NHCOC17H35; and ureide derivatives such as 4,4'bis (dodecylaminocarbonylamino) diphenylmethane of formula C12H25-NHCONHC6H4-CH 2 -C 6 H4-NHCONH-Ci2H 25 . According to a third variant of this embodiment, the organic compound is a compound of formula (III): (R-NHCO) X -Z- (NHCO-R ') y (III), in which, - R and R ’, identical or different, contain a saturated or unsaturated, linear, branched or cyclic hydrocarbon chain comprising from 1 to 22 carbon atoms, optionally substituted, and optionally comprising heteroatoms, rings and / or heterocycles, - Z represents a tri-functionalized group chosen from the following groups: - x and y are different integers with a value varying from 0 to 3 and such that x + y = 3. ICG70099 FR text deposit Preferably, when x is equal to 0 and Z represents Z 2 , the compound of formula (III) is N2, N4, N6-tridecylmelamine having the following formula with R 'representing the group C9H19: Other preferred compounds corresponding to formula (III) are such that x is equal to 0, Z represents Z 2 and R ′ represents a saturated, linear hydrocarbon chain, from 1 to 22 carbon atoms, preferably from 2 to 18 carbon atoms, preferably 5 to 12 carbon atoms. Other preferred compounds corresponding to formula (III) are such that: y is equal to 0 and Z represents Zi, the compounds then have the formula: with R chosen from the following groups, taken alone or as a mixture: Other preferred compounds corresponding to formula (III) are such that: y is equal to 0, Z represents Zi and R represents a saturated, linear hydrocarbon chain of 1 to 22 carbon atoms, preferably of 8 to 12 atoms of carbon. According to a fourth variant of this embodiment, the organic compound is a reaction product of at least one polyol in C3-C12 and at least one aldehyde in C2ICG70099 FR text deposit 02. Among the polyols which can be used, mention may be made of sorbitol, xylitol, mannitol and / or ribitol. Preferably, the polyol is sorbitol. Advantageously, according to this variant, the organic compound is a compound which comprises at least one function of general formula (IV): (IV) with: - x is an integer, - R is chosen from a C1-C6 alkyl, alkenyl, aryl or aralkyl radical, optionally substituted by one or more halogen atoms, one or more C1-C6 alkoxy groups The organic compound is advantageously a derivative of sorbitol. By “sorbitol derivative” is meant any reaction product obtained from sorbitol. In particular, any reaction product obtained by reacting an aldehyde with Dsorbitol. By this condensation reaction, sorbitol acetals, which are derivatives of sorbitol, are obtained. The 1,3: 2,4-Di-O-benzylidene-D-sorbitol is obtained by reacting 1 mole of D-sorbitol and 2 moles of benzaldehyde and has the formula: The sorbitol derivatives may thus be all the condensation products of aldehydes, in particular of aromatic aldehydes with sorbitol. We will then obtain sorbitol derivatives of general formula: ICG70099 FR text deposit where Ait and Ar 2 are optionally substituted aromatic rings. Among the sorbitol derivatives, other than 1,3: 2,4-Di-O-benzylidene-D-sorbitol, there can be found, for example, 1,3: 2,4: 5,6-tri-O-benzylidene- D-sorbitol, 2,4-mono-O10 benzylidene-D-sorbitol, l, 3: 2,4-bis (p-methylbenzylidene) sorbitol, l: 3: 2,4-bis (3,4dimethylbenzylidene) sorbitol , 1,3: 2,4-bis (p-ethylbenzylidene) sorbitol, 1,3: 2,4-bis (ppropylbenzylidene) sorbitol, 1,3: 2,4-bis (p-butylbenzylidene) sorbitol, 1,3 : 2,4-bis (pethoxylbenzylidene) sorbitol, 1,3: 2,4-bis (p-chlorobenzylidene) sorbitol, 3,3: 2,4-bis (pbromobenzylidene) sorbitol, 1,3: 2,4-Di -O-methylbenzylidene-D-sorbitol, 1,3: 2,4-Di15 O-dimethylbenzylidene-D-sorbitol, l, 3: 2,4-Di-O- (4-methylbenzylidene) -D-sorbitol, l, 3: 2,4-Di-O- (4,3-dimethylbenzylidene) -D-sorbitol. Preferably, according to this variant, the organic compound is 1,3: 2,4-Di-O-benzylidene-D-sorbitol. According to a fifth variant of this embodiment, the organic compound is a compound of general formula (V): R ”- (C00H) z (V), in which R” represents a linear or branched, saturated or unsaturated chain comprising from 4 to 68 carbon atoms, preferably from 4 to 54 carbon atoms, more preferably from 4 to 36 carbon atoms and z is an integer varying from 2 to 4. Preferably, the group R '' is a saturated linear chain of formula C w H 2w with w an integer varying from 4 to 22, preferably from 4 to 12. According to this variant of the invention, the organic compounds corresponding to formula (V) can be diacids (z = 2), triacids (z = 3) or tetracids (z = 4). The preferred organic compounds according to this variant are diacids with z = 2. ICG70099 FR text deposit Preferably, according to this variant, the diacids have the general formula HOOCCwH 2w -COOH with w an integer varying from 4 to 22, preferably from 4 to 12 and where z = 2 and R = C w H 2w . Advantageously, according to this variant, the organic compound is a diacid chosen from adipic acid or 1,6-hexanedioic acid with w = 4, pimelic acid or 1,7-heptanedioic acid with w = 5, suberic acid or 1,8-octanedioic acid with w = 6, azelaic acid or 1,9-nonanedioic acid with w = 7, sebacic acid or 1,10-decanedioic acid with w = 8, undecanedioic acid with w = 9, 1,2-dodecanedioic acid with w = 10 or tetradecanedioic acid with w = 12. More advantageously, the organic compound is sebacic acid or 1.1 ΟΙ 5 decanedioic acid with w = 8. The diacids can also be dimer diacids of unsaturated fatty acid (s), that is to say dimers formed from at least one unsaturated fatty acid, for example from a single unsaturated fatty acid or from two different unsaturated fatty acids. The diacid dimers of unsaturated fatty acid (s) are conventionally obtained by intermolecular dimerization reaction of at least one unsaturated fatty acid (reaction of Diels Aider for example). Preferably, a single type of unsaturated fatty acid is dimerized. They derive in particular from the dimerization of an unsaturated fatty acid in particular in Cx to C34, in particular in Ci 2 to C 22 , in particular in Ci6 to C 2 o, and more particularly in Cig. A preferred fatty acid dimer is obtained by dimerization of linoleic acid, which can then be partially or completely hydrogenated. Another preferred fatty acid dimer has the formula HOOC- (CH 2 ) 7-CH = CH- (CH 2 ) 730 COOH. Another preferred fatty acid dimer is obtained by dimerization of methyl linoleate. Similarly, fatty acid triacids and fatty acid tetracids can be found, obtained respectively by trimerization and tetramerization of at least one fatty acid. ICG70099 FR text deposit According to a sixth variant of this embodiment, the organic compound is a compound of general formula (VI): ^ (CH 2 ) p ^ Y in which, the groups Y and Y 'represent, independently of one another, an atom or group chosen from: H, - (CH 2 ) q-CH3, - (CH 2 ) q-NH 2 , - ( CH 2 ) qOH, - (CH 2 ) q-COOH or. (CH 2 ) p - (CH 2 ) q -NH- (CH 2 ) q -N, with q an integer varying from 2 to 18, preferably from 2 to 10, preferably from 2 to 4 and p an integer greater than or equal to 2, preferably having a value of 2 or 3. Among the preferred organic compounds corresponding to formula (VI), mention may be made of the following compounds: o nh 2 o NH ICG70099 FR text deposit Preferably, according to this variant, the organic compound of general formula (VI) is: nh 2 O According to a seventh variant of this embodiment, the organic compound is a compound of general formula (VII): R-NH-CO-CO-NH-R '(VII) in which, R and R', identical or different, represent a saturated or unsaturated hydrocarbon chain, linear, branched or cyclic, comprising from 1 to 22 carbon atoms, preferably from 8 to 12 carbon atoms, optionally substituted, and optionally comprising heteroatoms, rings and / or heterocycles. According to another embodiment of the invention, the chemical additive is a paraffin. Paraffins have chain lengths of 30 to 120 carbon atoms (C30 to C120). The paraffins are advantageously chosen from polyalkylenes. Preferably, polymethylene paraffins and polyethylene paraffins will be used according to the invention. These paraffins can be of petroleum origin or come from the chemical industry. Advantageously, the paraffins used are synthetic paraffins resulting from the conversion of biomass and / or natural gas. Preferably, these paraffins contain a large proportion of so-called “normal” paraffins, that is to say straight, straight chain, unbranched paraffins (saturated hydrocarbons). Thus, the paraffins can comprise from 50 to 100% of normal paraffins and from 0 to 50% of isoparaffins and / or branched paraffins. More preferably, the paraffins comprise from 85 to 95% of normal paraffins and from 5 to 15% of isoparaffins and / or branched paraffins. Advantageously, the paraffins comprise from 50 to 100% of normal paraffins and from 0 to 50% ICG70099 FR text deposit of isoparaffins. Even more advantageously, the paraffins comprise from 85 to 95% of normal paraffins and from 5 to 15% of isoparaffins. Preferably, the paraffins are polymethylene paraffins. More particularly, the paraffins are synthetic paraffins of polymethylene, for example paraffins resulting from the conversion of synthesis gas by the Fischer-Tropsch process. In the Fischer-Tropsch process, paraffins are obtained by reacting hydrogen with carbon monoxide on a metal catalyst. Fischer-Tropsch synthesis methods are described for example in the publications EP 1 432 778, EP 1 328 607 or EP 0 199 475. According to another embodiment of the invention, the chemical additive is a polyphosphoric acid. The polyphosphoric acids (PPA) which can be used in the invention are described in WO 97/14753. These are compounds of the raw formula PqHrOs in which q, r and s are positive numbers such as: q> 2 and in particular q goes from 3 to 20 or more and that 5q + r-2s = 0. In particular, said polyphosphoric acids can be linear compounds of crude formula P q H ( q + 2 ) O (3 q + i) corresponding to the structural formula: where q has the definition given above. They can also be products of two-dimensional or three-dimensional structure. All of these polyphosphoric acids can be considered as products of polycondensation by heating aqueous metaphosphoric acid. It will not depart from the scope of the invention to combine several different chemical additives such as different organic compounds of formula (I), (II), (III), (V), (VI) and (VII), the products of reaction of at least one C3-C12 polyol and at least one C2-C12 aldehyde, in particular those comprising a group of formula (IV), ICG70099 FR text deposit and / or different paraffins and / or different polyphosphoric acids in the bituminous composition of the invention. According to a first embodiment of the invention, the additive bituminous composition 5 comprises from 0.1% to 10% by mass, preferably from 0.5% to 5% by mass, more preferably from 0.5% to 2 , 5% by mass of chemical additive relative to the total mass of the bituminous composition. According to another embodiment of the invention, the additive bituminous composition according to the invention is a concentrated bituminous composition. In this case, before its implementation, for example in an application described below, the concentrated additive bituminous composition is melted and then diluted with at least one other non-additive bituminous composition. This dilution is calculated to reach an additive content of 0.1% to 10% by mass, preferably from 0.5% to 5% by mass, more preferably from 0.5% to 2.5% by mass of chemical additive relative to the total mass of the bituminous composition. According to this embodiment, the concentrated additive bituminous composition comprises from 5% to 30% by mass, preferably from 6% to 28% by mass, more preferably from 7% to 26% by mass of the chemical additive relative to the total mass of said base of the bituminous composition. According to one embodiment of the invention, the additive bituminous composition can also comprise at least one olefinic polymeric adjuvant. The olefinic polymeric adjuvant is preferably chosen from the group consisting of (a) ethylene / glycidyl (meth) acrylate copolymers; (b) the ethylene / monomer A / monomer B terpolymers and (c) the copolymers resulting from the grafting of a monomer B onto a polymer substrate. (a) The ethylene / glycidyl (meth) acrylate copolymers are advantageously chosen from random or block, preferably statistical, copolymers of ethylene and of a monomer chosen from glycidyl acrylate and glycidyl methacrylate, comprising from 50% to 99.7% by mass, preferably from 60% to 95% by mass, more preferably 60% to 90% by mass of ethylene. ICG70099 EN text deposit (b) The terpolymers are advantageously chosen from random or block, preferably random, terpolymers of ethylene, of a monomer A and of a monomer B. The monomer A is chosen from vinyl acetate and C1 to C6 alkyl acrylates or methacrylates. The monomer B is chosen from glycidyl acrylate and glycidyl methacrylate. The ethylene / monomer A / monomer B terpolymers comprise from 0.5% to 40% by mass, preferably from 5% to 35% by mass, more preferably from 10% to 30% by mass of units originating from monomer A and, from 0.5% to 15% by mass, preferably 2.5% to 15% by mass of units originating from monomer B, the remainder being formed from units originating from ethylene. (c) The copolymers result from the grafting of a monomer B chosen from glycidyl acrylate and glycidyl methacrylate, on a polymer substrate. The polymer substrate consists of a polymer chosen from polyethylenes, in particular low density polyethylenes, polypropylenes, random or block, preferably statistical, copolymers of ethylene and vinyl acetate and random or block copolymers, preferably statistical , ethylene and C1 to C6 alkyl acrylate or methacrylate, comprising from 40% to 99.7% by mass, preferably from 50% to 99% by mass of ethylene. Said graft copolymers comprise from 0.5% to 15% by mass, preferably from 2.5% to 15% by mass of grafted units originating from monomer B. Advantageously, the olefinic polymer adjuvant is chosen from random terpolymers of ethylene (b), of a monomer A chosen from acrylates or methacrylates of C1 to C7 alkyl, and of a monomer B chosen from acrylate of glycidyl and glycidyl methacrylate, comprising from 0.5% to 40% by mass, preferably from 5% to 35% by mass, more preferably from 10% to 30% by mass of units derived from monomer A and, from 0 , 5% to 15% by mass, preferably 2.5% to 15% by weight of units from monomer B, the rest being formed from units from ethylene. ICG70099 FR text deposit According to one embodiment of the invention, the bituminous composition comprises from 0.05% to 15% by mass, preferably from 0.1% to 10% by mass, more preferably from 0.5% to 6% by mass of the olefinic polymeric adjuvant relative to the total mass of the bituminous composition. According to a particular embodiment, a solid bituminous composition is prepared when cold and in divided form by bringing into contact: at least one bituminous composition as defined above, from 0.1% to 5% by mass, preferably from 0.5% to 4% by mass, more preferably from 0.5% to 2.5% by mass of a chemical additive, the percentages being given in mass based on the total mass of the bituminous composition. According to another particular embodiment, a solid bituminous composition is prepared when cold and in divided form by bringing into contact: at least one bituminous composition as defined above, of 5% and 30% by mass, preferably of 6% and 28% by mass, more preferably of 7% and 26% by mass of a chemical additive, the percentages being given by mass relative to the total mass of the bituminous composition. The amounts of the chemical additive and, optionally, of the olefinic polymeric adjuvant are adjusted according to the nature of the bituminous composition used. Method for transporting and / or storing and / or handling the bituminous solid composition when cold and in divided form Another object of the invention also relates to a method of transport and / or storage and / or handling of the solid bituminous composition when cold and in divided form, said bituminous composition being transported and / or stored and / or handled in the form breads or granules of bituminous composition solid at ICG70099 EN filing room temperature text, especially at high room temperature. The bituminous composition, solid in cold form and in divided form, is as described above. By "ambient temperature" or "high ambient temperature" is meant the temperature resulting from the climatic conditions under which the bitumen is transported and / or stored. More specifically, the ambient temperature is equivalent to the temperature reached during transport and / or storage and / or handling of the bitumen, it being understood that the ambient temperature implies that no heat input is provided other than that resulting from the weather conditions. Preferably, the additive bituminous composition of the invention is transported and / or stored and / or handled at room temperature for a period greater than or equal to 2 months, preferably 3 months. According to one embodiment of the invention, the additive bituminous composition of the invention is transported and / or stored at a temperature below 100 ° C. In particular, the temperature of transport and / or storage and / or handling corresponds to ambient temperature. By ambient temperature is meant the temperature which is reached during transport and / or storage of the bituminous composition according to the invention without said bituminous composition being heated by any type of process. Thus, the ambient temperature can reach high temperatures, lower than 100 ° C, during the summer periods, in particular in the geographical regions with hot climate. Preferably, the high ambient temperature is less than 100 ° C. Advantageously, the high ambient temperature is from 20 ° C to 90 ° C, preferably from 20 ° C to 80 ° C, more preferably from 30 ° C to 80 ° C. The cold solid bituminous compositions in divided form according to the present invention are remarkable in that they allow the transport and / or storage of cold bituminous composition under optimal conditions, in particular without creep of said compositions bituminous solids during their transport ICG70099 FR text deposit and / or storage, even when the ambient temperature is high and without degrading the properties of the said bituminous composition, or even improving them. Bitumen bread According to one embodiment of the invention, the cold solid bituminous composition 5 and in divided form is in the form of bread. Within the meaning of the invention, the bituminous composition in the form of bread is also called "bitumen bread". Bitumen bread is understood to mean a block of bituminous composition according to the invention having a mass of between 1 kg and 1000 kg, preferably between 1 kg and 200 kg, more preferably between 1 kg and 50 kg, even more preferably between 5 kg and 25 kg, even more preferably between 10 kg and 30 kg, said block being advantageously parallelepipedal, preferably being a block. The bitumen bread according to the invention preferably has a volume of between 1000 cm 3 and 50,000 cm 3 , preferably between 5,000 cm 3 and 25,000 cm 3 , more preferably between 10,000 cm 3 and 30,000 cm 3 , even more preferably between 14,000 cm 3 and 25,000 cm 3 . When bitumen bread is handled manually by one person, the mass of bituminous bread may vary from 1 to 20 kg, and from 20 to 50 kg in the case of handling by two people. When handling is carried out by mechanical equipment, the mass of the bitumen bread can vary from 50 to 1000 kg. Bitumen bread is made from the additive bituminous composition as described above according to any industrially known process, for example by extrusion, by molding, or according to the manufacturing process described in the document US2011 / 0290695. The bitumen bread is advantageously packaged with a hot-melt film according to any known process, preferably by a film of polypropylene, polyethylene or a mixture of polyethylene and polypropylene. The bituminous composition packaged in bitumen bread wrapped in a hot-melt film has the advantage of being ready for use, that is to say that it can be directly heated in the melter without ICG70099 FR text deposit unpacking for example for the manufacture of emulsion or possibly introduced directly into the coating unit for the manufacture of asphalt mixes. The hot-melt material which melts with the additive bituminous composition does not affect the properties of said bituminous composition. The bitumen bread according to the invention can also be covered with an anti-caking compound as defined above. In this variant, the preferences, the advantages, the various embodiments described for the anti-caking compounds also apply. The bitumen bread according to the invention can also be packaged in a carton according to any known process. In particular, the bitumen bread according to the invention is packaged in a carton by hot pouring the bituminous composition according to the invention into a carton whose wall of the internal face is siliconized and then cools, the dimensions of the carton being adapted to weight and / or volume of the asphalt bread desired. When the bitumen bread according to the invention is wrapped in a hot-melt film or is packaged in a carton, the Applicant has demonstrated that the deterioration of said hot-melt film or of said carton during transport and / or cold storage of said bitumen bread according to the invention did not cause the bituminous composition to creep. Consequently, the bitumen rolls according to the invention retain their initial shape and do not stick together during their transport and / or cold storage despite the fact that the hot-melt film or the cardboard is damaged. The absence of creep of the bituminous composition in the form of bread during its transport and / or cold storage is due to the presence of at least one chemical additive within the bituminous composition. Bitumen granules According to another embodiment of the invention, the cold bituminous composition in cold form and in divided form is in the form of granules. Within the meaning of the invention, the bituminous composition in the form of granules is also called "bitumen granules". ICG70099 FR text deposit The bitumen granules according to the invention may have, within the same population of granules, one or more shapes chosen from a cylindrical, spherical or ovoid shape. More specifically, the bitumen granules according to the invention preferably have a cylindrical or spherical shape. The size of the bitumen granules can vary depending on the manufacturing process used. According to one embodiment of the invention, the size of the bitumen granules is such that the longest average dimension is preferably less than or equal to 50 mm, more preferably from 3 to 30 mm, even more preferably from 5 to 20 mm. For example, the use of a die makes it possible to control the manufacture of granules of a chosen size. A sieving makes it possible to select granules according to their size. Preferably, the bitumen granules according to the invention have a weight of between 0.1 g and 50 g, preferably between 0.2 g and 10 g, more preferably between 0.2 g and 5 g. According to another embodiment of the invention, the size of the bitumen granules is such that the longest average dimension is preferably less than 20 mm, more preferably less than 10 mm, even more preferably less than 5 mm. The bitumen granules are obtained by forming an additive bituminous composition according to the invention as described above according to any known method, for example according to the manufacturing method described in document US 3,026,568, document WO 2009 / 153324 or document WO 2012/168380. According to a particular embodiment, the shaping of the granules can be carried out by draining, in particular using a drum. Other techniques can be used in the process for manufacturing bituminous composition granules, in particular molding, extrusion, pastillage ... According to one embodiment of the invention, the bitumen granules further comprise at least one anti-caking agent, preferably of mineral or organic origin. ICG70099 FR text deposit Preferably, the bitumen granules further comprise between 0.5% and 20% by mass, preferably between 2% and 20% by mass, more preferably between 4% and 15% by mass of the anti-caking agent relative to to the total mass of the additive bituminous composition of said granules. In this embodiment, the bitumen granules are prepared from the bituminous composition according to the invention as defined above, said granules being prepared by bringing into contact: - one or more additive bituminous compositions according to the invention, - between 0.1% and 5% by mass, preferably between 0.5% and 4% by mass, more preferably between 0.5% and 2.5% by mass of a chemical additive relative to the total mass of the bituminous composition additivated of said granules, and between 0.5% and 20% by mass, preferably between 2% and 20% by mass, more preferably between 4% and 15% by mass of the anti-caking agent relative to the total mass of the additive bituminous composition of said granules. According to one embodiment of the invention, the bitumen granules are covered on at least part of their surface with an anti-caking agent, preferably over their entire surface. Preferably, the mass of the anti-caking agent covering at least part of the surface of the granules is between 0.2% and 10% by mass, preferably between 0.5% and 8% by mass, more preferably between 0.5% and 5% relative to the total mass of the additive bituminous composition of said granules. Advantageously, the mass of the anti-caking agent covering at least part of the surface of the granules is approximately 1% by mass relative to the total mass of the bituminous composition with added said granules. Preferably, the anti-caking layer covering the bitumen granules according to the invention is preferably continuous so that at least 90% of the surface of said granules is covered with an anti-caking agent, preferably at least 95%, more preferably at least 99%. ICG70099 FR text deposit Preferably also, the average thickness of the anti-caking layer is preferably greater than or equal to 20 μm, more preferably between 20 and 100 μm. Advantageously, the anti-caking layer must be thick enough for it to be continuous. The granules according to the invention are covered with the anti-caking agent according to any known method, for example according to the method described in document US 3,026,568. The term “anti-caking agent” or “anti-caking compound” means any compound which limits, reduces, inhibits, delays, the agglomeration and / or the adhesion of the granules to one another during their transport and / or their storage. at room temperature and which ensures their fluidity during their handling. Preferably, the anti-caking agent is chosen from talc; fines generally with a diameter of less than 125 µm with the exception of limestone fines, such as siliceous fines; sand such as Fontainebleau sand; cement ; carbon; wood residues such as lignin, lignosulfonate, powders of coniferous needles, powders of coniferous cones, in particular pine; rice husk ash; glass powder; clays such as kaolin, bentonite, vermiculite; alumina such as alumina hydrates; silica; silica derivatives such as silica fumes, functionalized silica fumes, in particular hydrophobic or hydrophilic silica fumes, fumed silicas, in particular hydrophobic or hydrophilic fumed silicas, silicates, silicon hydroxides and silicon oxides ; plastic powder; lime; the plaster ; rubber powder; the powder of polymers such as styrene-butadiene copolymers (SB), styrene-butadiene-styrene copolymers (SB S); and their mixtures. Advantageously, the anti-caking agent is chosen from talc; fines generally with a diameter of less than 125 µm with the exception of limestone fines, such as siliceous fines; wood residues such as lignin, lignosulfonate, powders of coniferous needles, powders of coniferous cones, in particular pine; glass powder; sand such as Fontainebleau sand; silica fumes, ICG70099 FR text deposit including hydrophilic and hydrophobic silica fumes; fumed silicas, in particular hydrophobic or hydrophilic fumed silicas; and their mixtures. As an example, the anti-caking agent can be silica fumes. The fumes of silica used in the invention are commercially available and for example can be sold by Evonik Degussa under the brand AEROSIL®, such as for example AEROSIL®200, by Cabot Corporation under the brands CAB-O-SIL® and CAB-O-SPERSE® or by Wacker Chemie AG under the brand HDK®. According to one embodiment of the invention, the anti-caking agent included in the bituminous composition forming the bitumen granules can be identical or different from the anti-caking agent covering at least part of the surface of said bitumen granules. According to one embodiment of the invention, the bitumen granules comprise a core and a coating layer in which: the core comprises at least one bituminous composition with additives according to the invention as defined above and, the coating layer comprises at least one viscosifying compound and at least one anti-caking compound as defined above. By "coating layer" is meant that the coating layer covers at least 90% of the surface of the heart, preferably at least 95% of the surface of the heart, more preferably at least 99% of the surface of the heart. By "viscosifier" or "viscosifying compound" is meant a compound which has the property of reducing the fluidity of a liquid or of a composition and therefore of increasing its viscosity. The terms “viscosifier” and “viscosifying compound” are used within the meaning of the invention, in an equivalent manner and independently of one another. The viscosifier within the meaning of the invention is a material which has a dynamic viscosity greater than or equal to 50 mPa.s 1 , preferably from 50 mPa.s 1 to 550 mPa.s more preferably from 80 mPa.s 1 to 450 mPa.s 1 , the viscosity being a viscosity Brookfield measured at 65 ° C. The viscosity of a viscosifier according to the invention is ICG70099 FR text deposit measured at 65 ° C using a Brookfield CAP 2000+ viscometer and at a rotation speed of 750 rpm. The measurement is read after 30 seconds for each temperature. Preferably, the viscosifier is chosen from: - gelling compounds, preferably of plant or animal origin, such as: gelatin, agar, alginates, cellulose derivatives, starches, modified starches, or gellan gums; polyethylene glycols (PEG) such as PEG having a molecular weight of between 800 g.mol ' 1 and 8000 g.mol' 1 , such as for example a PEG having a molecular weight of 800 g.mol ' 1 (PEG- 800), a PEG having a molecular weight of 1000 g.mol ' 1 (PEG-1000), a PEG having a molecular weight of 1500 g.mol' 1 (PEG1500), a PEG having a molecular weight of 4000 g.mol ' 1 (PEG-4000) or a PEG having a molecular weight of 6000 g.mol' 1 (PEG-6000); - mixtures of such compounds. Advantageously, the viscosifier is chosen from: - gelling compounds, preferably of plant or animal origin, such as: gelatin, agar-agar, alginates, cellulose derivatives or gellan gums; polyethylene glycols (PEG) such as PEG having a molecular weight of between 800 g.mol ' 1 and 8000 g.mol' 1 , such as for example a PEG having a molecular weight of 800 g.mol ' 1 (PEG- 800), a PEG having a molecular weight of 1000 g.mol ' 1 (PEG-1000), a PEG having a molecular weight of 1500 g.mol' 1 (PEG1500), a PEG having a molecular weight of 4000 g.mol ' 1 (PEG-4000) or a PEG having a molecular weight of 6000 g.mol' 1 (PEG-6000); - mixtures of such compounds. According to one embodiment of the invention, the coating layer is obtained by application of a composition comprising at least one viscosifying compound and at least one anti-caking compound on all or part of the surface of the core in solid bituminous composition. Preferably, the coating layer is solid at room temperature, including at elevated room temperature. ICG70099 FR text deposit Preferably, the composition comprising at least one viscosifying compound and at least one anti-caking compound has a viscosity greater than or equal to 200 mPa.s' 1 , preferably between 200 mPa.s' 1 and 700 mPa.s' 1 , the viscosity being a Brookfield viscosity. Preferably, the coating layer comprises at least 10% by mass of at least one viscosifying compound relative to the total mass of the coating layer, preferably from 10 to 90% by mass, more preferably from 10 to 85% by weight. mass. Advantageously, when the vicosifier is a gelling agent, such as for example gelatin, the coating layer comprises from 10 to 90% by mass of viscosifying compound relative to the total mass of the coating layer, preferably from to 85% , even better from 15 to 60%. Advantageously, when the vicosifier is a gelling agent, such as for example gelatin, the coating layer comprises from 10 to 90% by mass of anti-caking compound relative to the total mass of the coating layer, preferably from 15 to 85 %, even better from 40 to 85%. Advantageously, when the vicosifier is a PEG, such as for example a PEG 20 having a molecular weight of between 800 g.mol ' 1 and 8000 g.mol' 1 , the coating layer comprises from 10 to 90% by mass of viscosifying compound relative to the total mass of the coating layer, preferably from 40 to 90%, better still from to 90%. Advantageously, when the vicosifier is a PEG, such as for example a PEG 25 having a molecular weight of between 800 g.mol ' 1 and 8000 g.mol' 1 , the coating layer comprises from 10 to 90% by mass of anti compound -agglomerating relative to the total mass of the coating layer, preferably from 10 to 60%, even better from 10 to 40%. Preferably, the coating layer comprises at least 10% by mass of an anti-caking compound relative to the total mass of the coating layer, preferably from 10 to 90% by mass, even more preferably from 15 to 90% en masse. ICG70099 FR text deposit Preferably, the coating layer represents at least 5% by mass relative to the total mass of the granule, preferably from 10 to 60% by mass, more preferably from 10 to 50%. Advantageously, the viscosifying compound and the anti-caking compound represent at least 90% by mass relative to the total mass of the coating layer, even better at least 95% by mass and advantageously at least 98% by mass. According to a preferred embodiment, the coating layer consists essentially of the viscosifying compound and the anti-caking compound. In addition to the viscosifying compound and the anti-caking compound, the coating layer may optionally comprise one or more compounds chosen from: chemical additives, polymers, ... According to an embodiment of the preferred invention, the bitumen granules have: - a core comprising at least one bituminous composition according to the invention as defined above and, a coating layer comprising gelatin or a PEG and at least one anti-caking compound chosen from fines generally having a diameter of less than 125 μm; wood residues such as lignin, conifer needle powders and conifer cone powders; rubber crumb; SB S copolymer powder; silica fumes, in particular hydrophilic and hydrophobic silica fumes; fumed silicas, in particular hydrophobic or hydrophilic fumed silicas; and their mixtures. More preferably, the bitumen granules have: - a core comprising at least one bituminous composition according to the invention as defined above and, a coating layer comprising gelatin or a PEG and at least one anti-caking compound chosen from fines generally having a diameter of less than 125 μm; lignin; rubber crumb; silica fumes including ICG70099 FR text deposit hydrophilic and hydrophobic silica fumes; fumed silicas, in particular hydrophobic or hydrophilic fumed silicas; SB S copolymer powder. According to a still more preferred embodiment, the bitumen granules are essentially composed of: - a core consisting of an additive bituminous composition according to the invention as defined above and, - a coating layer consisting of a mixture of gelatin or of a PEG, with at least one anti-caking compound chosen from fines generally of diameter less than 125 μm; lignin; rubber crumb; SB S copolymer powder; silica fumes, in particular hydrophilic and hydrophobic silica fumes; fumed silicas, in particular hydrophobic or hydrophilic fumed silicas. Preferably, the bitumen granules essentially consist of: - a core consisting of an additive bituminous composition as defined above comprising a chemical additive and - a coating layer consisting of a mixture of gelatin or of a PEG, with at least one anti-caking compound chosen from fines generally of diameter less than 125 μm; lignin; rubber crumb; SB S copolymer powder; silica fumes, in particular hydrophilic and hydrophobic silica fumes; fumed silicas, in particular hydrophobic or hydrophilic fumed silicas. According to yet another preferred embodiment, the bitumen granules essentially consist of: - a core consisting of an additive bituminous composition according to the invention as defined above, comprising a chemical additive of formula (I) defined below and - a coating layer consisting of a mixture of gelatin or of a PEG, with at least one anti-caking compound chosen from fines generally of diameter less than 125 μm; lignin; rubber crumb; SB S copolymer powder; silica fumes, in particular ICG70099 FR text deposit hydrophilic and hydrophobic silica fumes; fumed silicas, in particular hydrophobic or hydrophilic fumed silicas. According to one embodiment of the invention, the bitumen granules may further comprise one or more other coating layers, based on anti-caking agent covering all or part of the coating layer of the cold solid bituminous composition according to the invention. Bitumen kit, cold and divided Another object of the invention relates to a kit comprising at least: - a bitumen base when cold and in divided form as defined above, - a capsule comprising a pitch having a penetration at 25 ° C ranging from 0 to 20 1/10 mm, a softening temperature ball and rings (TBA) ranging from 115 ° C to 175 ° C, it being understood that the penetration is measured according to standard EN 1426 and that the TBA is measured according to standard EN 1427 in the form of granules. Such a kit allows the manufacture of a bituminous composition according to the invention under facilitated conditions of implementation. In particular, the proportion of cold solid bitumen base in divided form and pitch is calculated during the manufacture of the kit, which avoids having to dose the amount of pitch during the manufacture of the bituminous composition. According to an embodiment of the invention, the cold solid bitumen base and in divided form is a bitumen base comprising an additive as defined above. According to a particular embodiment, a solid bitumen base is prepared when cold and in divided form by bringing into contact: at least one bitumen base as defined above, from 0.1% to 5% by mass, preferably from 0.5% to 4% by mass, more preferably from 0.5% to 2.5% by mass of a chemical additive, the percentages being given by mass relative to the total mass of the bitumen base. ICG70099 FR text deposit According to one embodiment of the invention, the bitumen base cold solid and in divided form is in the form of bread. The embodiments described above for bitumen bread also apply to bitumen-based bread. According to one embodiment of the invention, the bitumen base in the form of bread comprises on one of its faces, a cavity making it possible to accommodate all or part of the capsule. According to one embodiment of the invention, the capsule is housed in whole or in part in the cavity in a removable manner. According to this embodiment, the capsule can be a soft-shell capsule, in particular a sachet, or a hard-shell capsule. Preferably, the capsule is made of hot-melt plastic film, in particular of polyethylene, or of silicone. Another object of the invention relates to the use of the kit as defined above in the process for preparing a bituminous composition ready for application according to the invention. According to one embodiment of the invention, the bitumen base in the form of bread and the capsule forming the kit as defined above are used in the process for preparing a bituminous composition simultaneously or consecutively. In a variant, when the bitumen base in the form of bread and the capsule forming the kit as defined above are used consecutively in the process for preparing a bituminous composition, said bitumen base in the form of bread is previously heated and then the capsule is added. In this variant, before heating the bitumen base bread, the capsule is dislodged from the cavity present on one of the faces of the bread. ICG70099 FR text deposit In another variant, when the bitumen base in the form of bread and the capsule forming the kit as defined above are used simultaneously in the process for preparing a bituminous composition. Bituminous mixtures or bituminous concretes The invention relates to the use of the bituminous composition according to the invention as defined above for the manufacture of bituminous mixes or bituminous concretes. The invention also relates to bituminous mixes or bituminous concretes comprising the composition according to the invention as defined above and aggregates. The invention also relates to a process for the manufacture of bituminous mixes or bituminous concretes comprising at least one bituminous composition and aggregates, the bituminous composition being chosen from bituminous compositions when cold solid and in divided form according to the invention as defined above, this method comprising at least the steps of: - heating the aggregates to a temperature ranging from 100 ° C to 180 ° C, - mixing the aggregates with the bituminous composition in a tank such as a kneader or a kneading drum, - obtaining mixes. The process of the invention has the advantage of being able to be implemented without prior step of heating the solid bitumen granules. According to one embodiment of the invention, the process does not include a step of heating the solid bituminous composition when cold and in divided form before it is mixed with the aggregates. The process for manufacturing asphalt mixtures according to the invention does not require a step of heating the solid bituminous composition before mixing with the aggregates because, in contact with the hot aggregates, the bitumen solid at room temperature melts. ICG70099 FR text deposit The bitumen solid at room temperature according to the invention as described above has the advantage of being able to be added directly to the hot aggregates, without having to be melted before mixing with the hot aggregates. Preferably, the step of mixing the aggregates and the road binder is carried out with stirring, then the stirring is maintained for at most 5 minutes, preferably at most 1 minute to allow a homogeneous mixture to be obtained. The solid bitumen according to the present invention is remarkable in that it allows the transport and / or storage of road bitumen at room temperature under optimal conditions, in particular without agglomeration and / or adhesion of the solid bitumen during transport and / or storage, even when the ambient temperature is high. The different embodiments, variants, preferences and advantages described above for each of the objects of the invention apply to all of the objects of the invention and can be taken separately or in combination. The invention is illustrated by the following examples given without limitation. Experimental part : Material and methods Bitumen properties are measured using the methods described below: - Penetration by the needle at 25 ° C (P25): unit = l / 10mm, standard EN 1426. - Ball and rings softening temperature (TBA): unit = ° C, standard EN1427. - Fraass point of fragility (Fraass): unit = ° C, standard EN12593 - Complex Module G * of the bituminous composition measured at 15 ° C and 60 ° C and at a frequency of 10Hz: unit = MPa or Pa, standard EN 14770 - Bituminous Asphalt Rigidity Complex Module measured at 15 ° C and at a frequency of 10Hz: unit = MPa, standard EN 12697-24-26 Raw materials : - Bitumen base (B): several bitumen bases were used, the characteristics of which are presented below in table 1: ICG70099 FR text deposit Trade name orcomposition P25 penetration TBA Bl Azalt ® 50/70 (bitumen base) 50 51.1 ° C B2 Azalt ® 35/50 (bitumen base) 40 51.6 ° C B3 Bitumen base of Ghanaian origin 125 42.0 ° C B4 Bitumen base of Ghanaian origin 89 49 ° C B5 Steel ox®l 10/30(oxidized bitumen) 25 113 B6 Modulotal® (hard grade bitumen used for theasphalt manufacturing athigh modulus) 16 65.4 Table 1: Characteristics of tested bitumen bases Gilsonite (G) sold commercially by Hillington under the brand H103 M® - Pitch (BR): several pitches were used, the characteristics of which are presented below in Table 2: PenetrabilityP25 TBA BIS 0-2 115-125 ° C BR2 0-2 135-145 ° C BR3 0-2 165-175 ° C Table 2: characteristics of the pitches tested Preparation of the compositions according to the invention and of the control compositions: From bitumen bases Bl to B6 and BRI pitches to BR3 or Gilsonite G, bituminous compositions were prepared according to the following protocol: The bitumen base BX (X = 1 to 4) was brought to 180 ° C, x% by weight of pitch (or Gilsonite or base B5 or B6) were added at 180 ° C. The mixture was kept stirred at 180 ° C for 1 h and at 300 rpm. ICG70099 FR text deposit The compositions C1 to CIO thus obtained are summarized in Table 3A below. The contents are given by mass relative to the total mass of the composition: Composition Cl C2 C3 C4 C5 C6 C7 C8 C9 CIO Bl 88% 88% B2 95% 85% 90% 80% B3 95% 97% B4 95% 97% BIS 12% BR2 12% 10% 20% 5% 5% BR3 - - 5% 15% - - - - 3% 3% Table 3A: Bituminous compositions according to the invention The compositions T1 to T3 thus obtained are summarized in Table 3B below. The contents are given by mass relative to the total mass of the composition: Composition Tl T2 T3 Bl 61% 88% 88% B5 12% B6 39% G - - 12% Table 3B: Control bituminous compositions The compositions C1 to CIO as well as the control compositions T1 and T2 exhibit homogeneous aspects after their manufacture. The control composition T3 has a non-homogeneous appearance (two-phase) with the presence of deposits at the bottom of the tank after their manufacture. Therefore, the use of gilsonite to harden bitumens is not advised due to the nonhomogeneous aspect of the composition obtained. The mechanical property tests could therefore not be carried out on this control composition T3. ICG70099 FR text deposit Measurements of the mechanical properties of the compositions according to the invention, of bitumen bases and of control compositions: The properties of penetrability, softening point, Fraass as well as of the module G * at a frequency of 10 Hz and respectively at temperatures of 15 ° C and 60 ° C. have been measured for the compositions C1 to CIO, the bitumen bases B1 to B6 and the control compositions T1 to T3. The properties of compositions C1 to CIO as well as the properties of bitumen bases B1 to B6 and of control compositions T1 to T3 are summarized in the tables 4A and 4B below: Composition Cl C2 C3 C4 C5 C6 C7 C8 C9 CIO Penetrability(1/10 mm) 30 30 28 16 26 19 86 62 87 64 TBA (° C) 58.2 58.6 55.6 63.6 58.6 64.2 47.2 50.6 46.6 50.2 G * (MPa) (15 ° C, 10Hz) 28.2 28.3 69 96 76 105 8.0 12.4 7.2 9.7 G * (Pa) (60 ° C, 10Hz) 53800 57800 nd nd nd nd nd nd nd nd Table 4A: Mechanical properties of compositions Cl to CIO nd: property not determined Composition Bl B2 B3 B4 B5 B6 Tl T2 Penetrability(1/10 mm) 49 40 125 89 25 16 30 42 TBA (° C) 51.1 51.6 42 45.6 113 65.4 58.2 54.6 G * (MPa) (15 ° C, 10Hz) 21.4 54 5.7 9.1 12.2 47 39.8 19.1 G * (Pa) (60 ° C, 10Hz) 24000 nd nd nd nd nd nd 27500 Table 4B: Mechanical properties of bitumen bases Bl to B6 and controls Tl to T3 nd: property not determined ICG70099 FR text deposit Mechanical properties of compositions C1 to CIO, bitumen bases Bl to B6 and controls Tl to T3 after aging. It is noted that the addition of a pitch according to the invention in a bitumen base of softer grade 5 such as Azalt® 50/70 or Azalt® 35/50 leads to a hardening of this base which results in particular by a lowering of the penetrability and an increase in the TBA (compositions Cl, C2, C3, C5): i) from 49 to 30 1/10 mm and from 51.1 to 58.2 ° C or 58.6 ° C for the Azalt® 50/70 in the presence of 12% pitch, ii) from around 43 to 28 1/10 mm and approximately 51 to 55.6 ° C for Azalt® 35/50 in the presence of 5% pitch, iii) approximately 43 to 23 1/10 mm and approximately 51 to 58.6 ° C for Azalt® 35/50 in the presence of 12% pitch, which makes it possible to formulate a composition meeting the specifications in terms of penetrability and TBA for a composition of grade 20/30, from of a grade 50/70 or 35/50. It is also noted that the addition of a pitch according to the invention in a bitumen base of softer grade such as Azalt® 35/50 leads to a hardening of this base which results in particular in a lowering of the penetrability and / or an increase in TBA (compositions C4 and C6): i) from approximately 43 to 16 1/10 mm and from approximately 51 to 63.6 ° C for the Azalt® 35/50 in the presence of 15% pitch, ii) from approximately 43 to 19/10 mm and about 51 to 65.0 ° C for Azalt® 35/50 in the presence of 20% pitch, which makes it possible to formulate a composition meeting the specifications in terms of penetrability and TBA for a grade 10 composition / 20, from grade 35/50. It is found that the addition of a pitch according to the invention in a bitumen base of softer grade such as Azalt® 50/70 or Azalt® 35/50 leads to a significant increase in the G * module. the composition : i) for a bitumen of grade 50/70, its module goes from 21.4 MPa to a module beyond 28 MPa with the addition of 12% pitch according to the invention, ii) for a bitumen of grade 35 / 50, its module goes from 54 to a module including 69 and 105 MPa depending on the amount of pitch according to the invention added. Comparatively, it can be seen that the addition of Modulotal® 10/20 in a bitumen base of softer grade such as Azalt® 50/70 leads to a hardening of this base which ICG70099 FR text deposit results in particular in a lowering of the penetrability and an increase in the TBA (composition Tl): i) from 49 to 30 1/10 mm and from 51.1 to 58.2 ° C for Azalt® 50/70 in the presence of 39% of Modulotal® 10/20, which makes it possible to formulate a composition corresponding to the specifications in terms of penetrability and TBA at a composition of grade 20/30, from grade 50/70. Regarding the module, the addition of Modulotal ® in a softer bitumen base such as Azalt® 50/70 leads to a significant increase in the G * module of the composition: i) for a 50/70 grade bitumen, its module goes from 21.4 MPa to a module above around 40 MPa with the addition of 39% modulotal. Nevertheless, with iso-penetrability, that is to say in order to obtain a grade composition 20/30, from a 50/70 grade, it is necessary to use at least three times more Modulotal® 10/20 hard bitumen than pitch, which represents greater complexity in terms of bitumen logistics hard. In comparison, it can be seen that the addition of Steelox® 110/30 to a softer grade bitumen base such as Azalt® 50/70 leads to a hardening of this base, which results in particular in a lowering of the penetrability and a increase in TBA (composition T2): i) from 49 to 42 1/10 mm and from 51.1 to 54.6 ° C for Azalt® 50/70 in the presence of 12% of Steelox®l 10/30, which makes it possible to formulate a composition that meets to the specifications in terms of penetration and TBA at a composition of grade 35/50, from grade 50/70. Nevertheless, at iso-content in Steelox® and in pitch, that is to say with 12% of Steelox® in the control composition T2 and 12% of pitch in the composition Cl, one obtains from a bitumen of grade 50/70, a composition of grade 35/50 using Steelox ® while using pitch, a composition of grade 20/30 is obtained from a bitumen of grade 50/70. We also note that the addition of 12% of Steelox ® in a grade bitumen 50/70 does not improve the module of this bitumen but on the contrary lowers its module because it goes from 21.4 MPa to 19.1 MPa unlike the addition of pitch in a bitumen of grade 50/70. ICG70099 FR text deposit Consequently, these results demonstrate that at iso-content in Steelox® and in pitch, a bitumen comprising 12% of pitch has a harder grade and also a higher modulus than a bitumen comprising 12% of Steelox®. We also note that the addition of a pitch according to the invention in a bitumen base B3 of softer grade leads to a hardening of this base which results in particular in a lowering of the penetrability and / or an increase in the TBA: i) from 125 to 86 1/10 mm and from 42 to 47.2 ° C for the bitumen base B3 in the presence of 5% pitch BR2 (composition C7), ii) from 125 to 87 1/10 mm and from 42 at 46.6 ° C for the bitumen base B3 in the presence of 3% pitch BR3 (composition C9), which makes it possible to formulate a composition meeting the specifications in terms of penetrability to a composition having a penetrability of less than 90 1/10 mm and meeting the specifications for grade AC 10. We also note that the addition of a pitch according to the invention in a bitumen base B4 of softer grade leads to a hardening of this base which results in particular in a lowering of the penetrability and / or an increase in the TBA: i) from 89 to 62 1/10 mm and from 45.6 to 50.6 ° C for the bitumen base B4 in the presence of 5% pitch BR2 (composition C8), ii) from 89 to 64 1/10 mm and from 45.6 to 50.2 ° C for the bitumen base B4 in the presence of 3% pitch BR3 (CIO composition), which makes it possible to formulate a composition meeting the specifications in terms of penetrability to a composition having a penetrability lower than 70 1/10 mm and meeting the specifications of grade AC20. It is noted that the addition of a pitch according to the invention in a bitumen base of softer grade such as the bitumen bases B3 or B4 leads to a significant increase in the modulus G * of the composition: i) for the bitumen base B3, its module goes from 5.7 to a module included 7 and MPa as a function of the amount of pitch according to the invention added, ii) for the bitumen base B4, its module goes from 9 to a module comprised 9.7 and 12.4 MPa depending on the amount of pitch according to the invention added. Consequently, the addition of pitch according to the invention to a bitumen base makes it possible both to obtain a bitumen base of harder grade and also to obtain a bitumen base having a high modulus which makes it possible to use it for the manufacture of high modulus asphalt. ICG70099 FR text deposit Preparation of bituminous mixes and measurements of their mechanical properties: A bituminous mix is characterized as a high modulus bituminous mix 5 also called EME according to standard NF EN 13108-1 if it has at least one complex modulus of rigidity greater than 14000 MPa, the measurement being carried out measured at 15 ° C and at a frequency of 10Hz according to standard NF EN 12697-26. Two bituminous mixes (El and E2) are respectively obtained from the base 10 bitumen Bl and from the composition C2 according to the invention and from aggregates having the granular cut described in Table 5: Cut (mm) 0/2 2/6 6/10 10/14 Filler Weight (%) 31 18 20 29 2 Table 5: Particle size composition Bituminous mixes are prepared as follows: - The aggregates are brought to the temperature of 165 ° C for a period of approximately 8 hours, - The bituminous composition is heated to 165 ° C and then poured onto the previously heated aggregates, the mixture thus obtained is kneaded for approximately 180 seconds at 165 ° C. The bituminous mixes thus obtained have a bituminous composition content of 5.1% by mass relative to the total mass of the mixes. The bituminous mixes E1 and E2 are obtained according to the method described above and comprise respectively 5.1% by mass of bitumen base Bl and of the composition C2 according to the invention relative to the total mass of the coated materials. The modules of complex rigidity of bituminous mixes El and E2 are summarized in table 6 below. El E2 Complex module at 15 ° C and 10Hz (MPa) 11493 14608 Table 6: Complex modulus of rigidity of bituminous mixes El and E2 ICG70099 FR text deposit Bituminous mixes E2 obtained from composition C2 according to the invention have a complex module of 14,608 MPa, unlike bituminous mixtures El obtained from base bitumen of grade 50/70 whose complex module is 11,493 MPa. Consequently, bituminous mixes E2 with a modulus value greater than 14000 Pa can be used as bituminous mixes with high modulus, unlike bituminous mixtures El. ICG70099 FR text deposit
权利要求:
Claims (20) [1" id="c-fr-0001] 1. Bituminous composition characterized in that the composition comprises: a) at least one pitch having a penetrability at 25 ° C ranging from 0 to 20 1/10 mm, a ball and ring softening temperature (TBA) ranging from 115 ° C to 175 ° C, it being understood that the penetrability is measured according to standard EN 1426 and that the TBA is measured according to standard EN 1427, and b) at least one bitumen base. 10 [2" id="c-fr-0002] 2. Composition according to claim 1, in which the pitch is an oxidized pitch. [3" id="c-fr-0003] 3. Composition according to claim 1 or 2, in which the pitch is present in an amount ranging from 2 to 30% by mass relative to the total mass of the composition. 15 [4" id="c-fr-0004] 4. Bituminous composition according to any one of claims 1 to 3, which is cold solid and in divided form, and further comprises at least one chemical additive chosen from an organic compound, a paraffin, a polyphosphoric acid and their mixtures. 20 [5" id="c-fr-0005] 5. Bituminous composition according to claim 4 comprising from 0.1% to 5% by mass, preferably from 0.5% to 4% by mass, more preferably from 0.5% to 2.5% by mass of said chemical additive relative to the total mass of the bitumen base. [6" id="c-fr-0006] 6. Bituminous composition according to claim 4 or 5, in which the additive 25 chemical is an organic compound which has a molar mass by mass less than or equal to 2000 gmol 1 , preferably a molar mass less than or equal to 1000 gmol 1 . [7" id="c-fr-0007] 7. bituminous composition according to any one of claims 4 to 6, 30 in the form of bread or granules. [8" id="c-fr-0008] 8. A method of manufacturing a bitumen composition according to any one of claims 1 to 7, this method comprising the following steps: - Heating of the bitumen base b) at a temperature ranging from 140 to 180 ° C, 35 - Introduction of pitch a) in the bitumen base b), ICG70099 FR replacement text NI - Stirring of the mixture at a temperature ranging from 140 to 180 ° C until a homogeneous mixture is obtained. [9" id="c-fr-0009] 9. The method of claim 8, wherein the pitch is introduced in the form of 5 granules. [10" id="c-fr-0010] 10. Kit capable of being used for the manufacture of a bituminous composition according to any one of claims 1 to 7, comprising at least: - a solid bitumen base when cold and in divided form, 10 - a capsule comprising at least one pitch having a penetrability at 25 ° C ranging from 0 to 20 1/10 mm, a ball and ring softening temperature (TBA) ranging from 115 ° C to 175 ° C, it being understood that the penetrability is measured according to standard EN 1426 and that the TBA is measured according to standard EN 1427 under granule shape. 15 [11" id="c-fr-0011] 11. Kit according to claim 10, in which the bitumen base cold solid and in divided form is in the form of bread. [12" id="c-fr-0012] 12. Kit according to claim 10 or 11, in which the cold solid bitumen base and in divided form comprises on one of its faces, a cavity making it possible to accommodate all 20 or part of the capsule. [13" id="c-fr-0013] 13. Kit according to claim 12, wherein the capsule is housed in whole or in part in said cavity in a removable manner. 25 [14" id="c-fr-0014] 14. Process for the preparation of a bituminous composition according to any one of claims 4 to 7, comprising: - The mixture of at least one bituminous composition according to any one of claims 1 to 3 and of at least one chemical additive chosen from an organic compound, a paraffin, a polyphosphoric acid and their mixtures, to form a 30 additive bituminous composition, - the shaping of the bituminous composition with additives in the form of bread or granules. [15" id="c-fr-0015] 15. Method of transport and / or storage and / or handling of a composition 35 bituminous material according to any one of claims 4 to 7, said composition ICG70099 FR bituminous text deposit being transported and / or stored and / or handled in the form of breads or granules of bituminous composition solid at room temperature. [16" id="c-fr-0016] 16. Bituminous mixes or concretes comprising the bituminous composition according to any one of claims 1 to 7 and aggregates. [17" id="c-fr-0017] 17. Use of a bituminous composition according to any one of claims 1 to 7 for the manufacture of bituminous mixes or bituminous concretes. [18" id="c-fr-0018] 18. A method of manufacturing bituminous mixes or bituminous concretes comprising at least one bituminous composition and aggregates, the bituminous composition being chosen from bituminous compositions that are solid when cold and in divided form according to any one of claims 4 to 7, this process comprising 15 at least the steps of: - heating the aggregates to a temperature ranging from 100 ° C to 180 ° C, - mixing the aggregates with the bituminous composition in a tank such as a kneader or a kneading drum, - obtaining mixes. [19" id="c-fr-0019] 19. The method of claim 18, which does not include a step of heating the bituminous composition solid cold and in divided form before mixing with the aggregates. 25 [0020] 20. Use of a pitch having a penetrability at 25 ° C ranging from 0 to 20 1/10 mm, a ball and ring softening temperature (TBA) ranging from 115 ° C to 175 ° C, it being understood that the penetrability is measured according to standard EN 1426 and that the TBA is measured according to standard EN 1427 to increase the modulus of a bituminous composition or to increase the modulus of bituminous mixes or concretes.
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公开号 | 公开日 PL3510105T3|2022-01-03| FR3055630B1|2020-07-10| WO2018046836A1|2018-03-15| EP3510105B1|2021-07-21| US20190241743A1|2019-08-08| EP3510105A1|2019-07-17|
引用文献:
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法律状态:
2017-08-21| PLFP| Fee payment|Year of fee payment: 2 | 2018-03-09| PLSC| Publication of the preliminary search report|Effective date: 20180309 | 2018-08-22| PLFP| Fee payment|Year of fee payment: 3 | 2019-08-20| PLFP| Fee payment|Year of fee payment: 4 | 2020-08-19| PLFP| Fee payment|Year of fee payment: 5 | 2021-09-21| PLFP| Fee payment|Year of fee payment: 6 |
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申请号 | 申请日 | 专利标题 FR1658334A|FR3055630B1|2016-09-08|2016-09-08|BITUMINOUS COMPOSITION FOR HIGH MODULE COATINGS| FR1658334|2016-09-08|FR1658334A| FR3055630B1|2016-09-08|2016-09-08|BITUMINOUS COMPOSITION FOR HIGH MODULE COATINGS| US16/331,803| US20190241743A1|2016-09-08|2017-09-05|Bituminous composition for high-modulus mixes| PL17780792T| PL3510105T3|2016-09-08|2017-09-05|Bitumenous composition for high-modulus coated material| EP17780792.2A| EP3510105B1|2016-09-08|2017-09-05|Bitumenous composition for high-modulus coated material| PCT/FR2017/052345| WO2018046836A1|2016-09-08|2017-09-05|Bituminous composition for high modulus mixes| 相关专利
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