• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Shaped articles with a coherent matrix which comprises homogeneously arranged inorganic solid particles A of a size of from about 50 ANGSTROM to about 0.5 micron, such as silica dust particles, and densely packed solid particles B having a size of the order of 0.5-100 micron and being at least one order of magnitude larger than the respective particles A, such as Portland cement particles, the particles A being homogeneously distributed, especially densely packed, in the void volume between the particles B, are made from an easily flowable composite material containing a very low amount of liquid and an extremely high amount of a dispersing agent, such as a concrete superplasticiser. Test speciments with Portland cement-silica dust-based matrices with dense packing of the silica dust have higher compressive strengths than hitherto reported, and reinforcements such as fibers or steel bars are subject to a high degree of fixation in the dense Portland cement-silica dust matrix. Composite material for making shaped article comprises dispersing agent in sufficiently high amount to obtain a viscous to plastic consistency of the composite material with the small volume of liquid necessary to fill voids between particles A and B. The shaping of the composite material may be performed in a low stress field and without exhange of liquid with the surroundings.
    公开号:SU1582982A3
    申请号:SU802947749
    申请日:1980-07-02
    公开日:1990-07-30
    发明作者:Хейрик Вейч Ханс
    申请人:Актиесельскабет Аальборг Портлэнд-Семент-Фабрик (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to building materials and can be used, in particular, for the manufacture of fittings.
    The purpose of the invention is to increase the strength of the product and obtain a high-quality homogeneous structure.
    The composite material for the fabrication of a shaped product contains particles of 0.5-100 microns forming the frame structure and solid fine particles of an inert core of the first space, having a size of 0.005-0.5 microns.
    The number of particles forming the tangential structure corresponds to the density of the composite material with homogeneously distributed particles of inert filler in the first space between the particles forming the frame structure.
    The amount of fluid corresponds to the amount needed to fill the voids between the particles forming the frame structure and the fine particles of an inert filler in the pore space.
    The amount of dispersing agent is sufficient to impart fluidity and ductility to the composite material in the region of low stress (less than 5 kg / cm 2, preferably less than 200 g / cm 2).
    At least 20% of the weight of the particles forming the framework structure are Portland cement particles.
    The surfactant dispersing agent is supplied in an amount sufficient to ensure a tight packing of fine inert particles of the pore space under conditions of low stress (less than 5 kg / cm 2, preferably less than 100 g / cm 2). The ideal amount of dispersing agent corresponds to such a value, at which the surfaces of the inert aggregate particles of the pore space are completely occupied.
    Dispersing agent for concrete, which is a superplasticizer, in systems based on portland cement, contains alkali metal or silk-earth metal salts, in particular, sodium or calcium salts, naphthalene sulfuric acid 1 / formaldehyde, of which more than 70% by weight are molecules containing 7 or more naphthalene cores.
    When composite material is based on Portland cement, i.e. contains at least 20 by weight
    five
    P
    with
    P
    0
    5 40 45
    50 55
    Portland cement particles as particles forming a frame structure, sand and / or stone can be used as additional materials for the production of new composite materials.
    The most effective composite materials are those in which the particles of the inert aggregate of the pore space are silica powder particles having a specific surface area of 50,000-20,00000 cm2 / g, in particular 250000 cm2 / g, and particles forming a frame structure containing at least 50% of Portland cement.
    Composite material has a very small ratio between water and cement and any other particles forming the frame structure, plus silica powder. This ratio is 0.12-0.30 by weight (preferably 0.12-0.20), and silica powder may be present in a volume of 0.1-50%, in particular 10-30% (preferably 5-50 %) total volume of particles of a composite material.
    In composite materials based on Portland cement with silica powder, the amount of dry plasticizer is 1-4%, in particular 2-4% based on the total weight of Portland cement and silica.
    The dispersant may be added to the composite material together with water as a solution or in dry form separately from water. In the latter case, the combination of a dispersing agent with water occurs during the mixing process.
    By mixing, the homogeneity of the particles of the inert aggregate of the pore space is achieved.
    权利要求:
    Claims (6)
    [1]
    1. Composite material for the manufacture of a shaped product containing fine particles of an inert filler in the pore space, particles forming a frame structure, dispersing agent and water characterized in that, in order to increase the strength of the product and obtain a high-quality uniform structure, form the frame structure of the particle.
    They range in size from 0.5 to 100 microns, and they range from 20 to 100 May. I am Portland cement, the inert aggregate of the pore space consists of particles of silica powder with a size of 0.005 to 0.5 µm, uniformly distributed in the pore space, and 5-50 vol.% In terms of their total volume with the particles of the framework structure, the dispersing agent is a concrete superplasticizer, and the mass ratio of water to the particles of the framework structure and the inert filler of the first space is 0.12-0.30.
    [2]
    2. A material according to claim 1, characterized in that the silica powder particles have a specific surface area of 50000 g 20000 cm2 / g.
    [3]
    3. Material according to PP4 1 and 2, about t - characterized in that the particles forming the frame structure contain particles of fine sand, fly ash and small chalk.
    0
    0
    [4]
    4.Material popp. 2 and 3, characterized in that the concrete superplasticizer is an alkaline or alkaline earth metal salt of highly condensed sulfuric acid — formaldehyde condensate, where more than 70% are molecules containing seven or more naphthalene,
    i
    [5]
    5. Material according to claim A, characterized in that the alkali or alkaline earth metal salts are sodium or calcium salts.
    [6]
    6.Material on PP. 4 and 5, characterized in that the amount of dry plasticizer is 1-4%, calculated on the total weight of Portland cement and silica. Priority points:
    03.11.78 by pp. 1, 2, 4, 6;
    07.13.79 p.5.
    类似技术:
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    CN1023474C|1994-01-12|Process for production of cellular concrete
    SU770805A1|1980-10-15|Method of producing polymeroconcrete and polymerosilicate articles
    JPH11106251A|1999-04-20|Production of hardened product
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    SU533568A1|1976-10-30|Raw mix for the manufacture of acid-resistant concrete
    同族专利:
    公开号 | 公开日
    NO793532L|1980-05-22|
    IE792109L|1980-05-03|
    ES8102999A1|1981-02-16|
    ES485648A0|1981-02-16|
    DE2967579D1|1986-03-27|
    AU538813B2|1984-08-30|
    EP0010777B2|1995-06-14|
    IS2522A7|1980-05-04|
    CA1190947A|1985-07-23|
    FI793451A|1980-05-04|
    EP0010777A1|1980-05-14|
    FI72306B|1987-01-30|
    WO1980000959A1|1980-05-15|
    NO163449B|1990-02-19|
    IS1485B|1992-06-30|
    EP0010777B1|1986-02-19|
    AU5250979A|1980-05-15|
    JPS55500863A|1980-10-30|
    NO163449C|1996-11-25|
    JPS6059182B2|1985-12-24|
    IE52191B1|1987-08-05|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DK492478|1978-11-03|
    DK297679|1979-07-13|
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