• 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:
    A method of measuring the compactibility of a fresh concrete mass, for obtaining information of the applicability of the mass with respect to the strength properties of the cast product. A sample (20) having a determined weight (m) is taken from the mass and compressed in two opposite directions with a constant force (P) and subjected to a shearing compaction between two slanting planes (13, 14) which extend in parallel with each other and alter their positions through rotation. The volume (V, Vt) of the sample is determined at the beginning of the compaction and after a pre-determined compaction work, whereafter the volume change of the sample is compared with experimentally defined limit values. The apparatus comprises a compacting device for subjecting the sample in a container to a shearing compaction, and means for maintaining the sample under compression during the compaction.
    公开号:SU1579472A3
    申请号:SU864028627
    申请日:1986-12-02
    公开日:1990-07-15
    发明作者:Пааккинен Илмари
    申请人:Илмари Пааккинен (FI)；
    IPC主号:
    专利说明:

    This invention relates to a technique for testing materials, in particular, thickening a thick cast mass, for example, a freshly prepared concrete mix.
    The purpose of the invention is to improve the accuracy and determination of compaction over time.
    FIG. 1 shows the device, front view; in fig. 2 shows section A-A in FIG. 1J in FIG. 3 shows a section BB in FIG. one; in fig. 4 g axial section of the container and sealing punches} in FIG. 5 - the stages of compaction, in FIG. 6 is a plot of the change in densification over time.
    A device for determining the compaction of a freshly prepared concrete mixture contains a container 1 for placing the test mixture mounted on frame 2, a device for compressing the test mixture in the form of punches 3 and 4 with plates 5 and 6, a carriage 7, a drive 8 for moving the carriage and the upper punch 4 , drive rotation of the punches in the form of a gearbox 9 and an electric motor 10. Gearbox 9 is connected to the vertical shaft 11 of the lower sealing punch and the vertical shaft 12 of the upper sealing punch through oh shaft
    SP
    WITH 3 GS

    SD
    13 "and gear wheels. 14 of the transmission in such a way that both vertical shafts have the same rotational speed.
    Plates of punches are installed with a slope relative to the vertical shaft and parallel to each other.
    The device contains a measuring panel 15 on which a hydraulic cylinder pressure indicator 16 is installed, a device for counting the number of revolutions of the shaft 17, a carriage amount of movement indicator 18, a chart recorder 19, a memory block 20. A scale 21 measuring the movement of the carriage is fixed on the frame. Position 22 shows the test mass.
    The method is carried out as follows.
    A portion of the concrete mix, having a certain mass, is poured into the container 1, which has a cross-sectional area and the upper sealing punch is lowered onto the sample.
    The punch is pressed to the sample using a hydraulic cylinder with a constant force P. Then the punches are turned by means of an electric motor; as a result, plates 5 and 6, mounted in an inclined position, create the effect of compression with a shift of the sample. As a result, the sample is compacted after a certain amount
    The speeds of the punches per distance S, which is measured on a scale of 21, the sample volume changing to a value Vj. The pressed sample is removed as a cylindrical body, which is used to determine the strength characteristics of the concrete mix after setting.
    The electric motor is controlled by a freely selected program.
    It stops at regular intervals to record the number of revolutions and movements. The motor can rotate continuously, and the number of revolutions and movements will be transferred to a memory unit for processing sample compaction data using a recorder.
    Curve A in Figure 6 shows the change in compaction of the sample over time when the sample was subjected to compaction with a shift under the influence of pos 5
    0
    Q
    five
    Q
    ,
    five
    This is an increase in compression of P “1.5 bar. The water-cement ratio of the concrete mix shown in curve A was equal to 0.328. Curve B, respectively, shows the results of tests carried out with the concrete mixture at a water-cement ratio of 0.361. In other respects, the weight was identical in the two tests.
    By means of the method, it is possible to measure the compaction of the baton mixture quickly within several tens of seconds.
    权利要求:
    Claims (4)
    [1]
    1. A method for determining compaction of a freshly prepared concrete mixture, including sampling a concrete mix, double-sided sealing with punches, measuring the change in height of the concrete mix and determining the amount of compaction, characterized in that, in order to improve the accuracy and determine compaction over time, two-sided compaction is performed by rotation of inclined parallel plates of punches with a constant force, determine the volume of the sample after the termination of rotation of the punches and determine the amount of compaction relative to the initial mass to volume.
    [2]
    2. A device for determining the compaction of a freshly prepared concrete mixture containing a container for accommodating the test mixture, a device for compressing the test mixture in the form of punches with plates and a measuring device, characterized in that the device is equipped with a frame with a carriage, a drive for moving the carriage and an upper punch and a rotation drive punches, plates of which are connected by means of a shaft with a drive of their rotation and installed parallel to each other relative to another and inclined to the axis of their rotation, one of poins The shaft is attached to the displacement piston rod by means of a shaft.
    [3]
    3. The device according to claim 2, wherein it is equipped with a device for counting the number of revolutions of the shaft.
    [4]
    4. The device according to claim 2, characterized in that it is provided with a scale measuring the movement of the carriage.
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    类似技术:
    公开号 | 公开日 | 专利标题
    SU1579472A3|1990-07-15|Method of determining compaction of frsh concrete mix and device for effecting same
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    AT394905B|1992-07-27|Method and equipment for measuring the properties, particularly the ability to be compacted, of a stiff, castable compound
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    SU889790A1|1981-12-15|Device for testing compactibility of soils
    DE312833C|
    AT162847B|1949-04-11|Method and apparatus for predicting the behavior of a concrete mix
    同族专利:
    公开号 | 公开日
    FI851340A0|1985-04-03|
    US4794799A|1989-01-03|
    AU5665986A|1986-10-23|
    DE3690151T1|1988-04-21|
    HUT49949A|1989-11-28|
    NL8620115A|1988-01-04|
    FI71619B|1986-10-10|
    CA1268054A|1990-04-24|
    ES8801438A1|1987-12-16|
    IT8647849D0|1986-04-02|
    FR2580075A1|1986-10-10|
    ES553657A0|1987-12-16|
    IT1203761B|1989-02-23|
    CH671636A5|1989-09-15|
    BE904549A|1986-07-31|
    WO1986005883A1|1986-10-09|
    SE8703818L|1987-10-02|
    GB2194063B|1989-11-15|
    AU577464B2|1988-09-22|
    FR2580075B1|1988-12-16|
    NZ215609A|1987-09-30|
    SE8703818D0|1987-10-02|
    GB8722774D0|1987-11-04|
    GB2194063A|1988-02-24|
    JPS62502803A|1987-11-12|
    SE455889B|1988-08-15|
    FI71619C|1987-01-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE8403120U1|1984-05-03|Michenfelder Elektrotechnik, 6500 Mainz|Device for measuring the compressibility of molding sand|
    US3494172A|1967-09-25|1970-02-10|Ernestine Juve|Cone curemeter|
    DE2233831C2|1972-07-10|1982-12-30|Karim Wade Prof. Saskatoon Saskatchewan Nasser|Concrete mix workability testing device - uses sampling tube with index indicating height of retained cement when tube is removed from mix|
    DE2452271A1|1974-11-04|1976-05-06|Ekard Bahr|Test and monitor system for concrete - is for determining water cement value by weight of vented concrete in water and compression|
    DE2728181C3|1977-06-23|1980-01-31|Karl Prof. Dipl.-Ing. 6101 Seeheim Listner|Device for the production of test specimens from non-pourable bituminous masses|
    SU845097A1|1979-06-05|1981-07-07|Кишиневский Политехнический Институтим. C.Лазо|Method of monitoring compactness of concrete mixture at vibroforming|
    DE3237090C2|1982-10-07|1986-07-24|Dyckerhoff & Widmann AG, 8000 München|Process for the determination of the characteristic values required for the assessment of fresh concrete as well as the arrangement for carrying out the process|
    FI75672C|1986-10-02|1988-07-11|Ilmari Paakkinen|FOERFARANDE FOER MAETNING AV EGENSKAPER HOS FORMBARA MATERIAL, SAERSKILT PLASTISKA OCH REOLOGISKA EGENSKAPER.|FI75672C|1986-10-02|1988-07-11|Ilmari Paakkinen|FOERFARANDE FOER MAETNING AV EGENSKAPER HOS FORMBARA MATERIAL, SAERSKILT PLASTISKA OCH REOLOGISKA EGENSKAPER.|
    DE4227376C2|1992-08-19|1996-02-29|Schwedes Joerg|Method for determining the average particle size and particle size distribution of a bulk material and use of a device for carrying out the method|
    NO179652C|1992-10-02|1996-11-20|Powder Science & Tech|Device for determining flow properties of powdered materials|
    US5323655A|1993-04-23|1994-06-28|Troxler Electronic Laboratories, Inc.|Method and apparatus for compacting material samples|
    FI96243C|1993-10-26|1996-05-27|Ilmari Paakkinen|Method and apparatus for measuring the properties of grainy soils|
    DE19532248C2|1995-09-01|1998-10-15|Rheinische Kalksteinwerke|Device for measuring the properties of bulk goods|
    US6089100A|1997-08-06|2000-07-18|The Penn State Research Foundation|Real-time spatial particulate mass deposition tester|
    FI114171B|2000-05-12|2004-08-31|Antti Paakkinen|Method for measuring the compaction properties of soil masses and other similar masses|
    US6925889B2|2002-10-18|2005-08-09|Pine Instrument Company|Devices and methods for applying known resistance loads and measuring internal angles of gyration in gyratory compactors|
    FI119035B|2002-03-22|2008-06-30|Antti Paakkinen|Method and apparatus for determining rotor compactor elasticities|
    DE10306073A1|2003-02-06|2004-08-19|Institut für Fertigteiltechnik und Fertigbau Weimar e.V.|Testing of the compressibility of concrete during or immediately after its production, whereby a sample is compressed by vibration and characteristic values measured in order to predict its future compressibility and workability|
    US8438914B2|2010-11-13|2013-05-14|Gregory P. Martiska|Apparatus for measuring the unconfined yield strength and time unconfined yield strength of bulk granular material|
    US9671385B2|2014-05-15|2017-06-06|H. Joseph Buhac|Compaction testing sampler assembly|
    CN104020077B|2014-06-03|2017-01-04|三一汽车制造有限公司|A kind of flow graph|
    CN105319133A|2015-12-09|2016-02-10|重庆飞强混凝土有限公司|Concrete pressure testing method|
    CN109827812B|2019-02-03|2021-09-14|重庆建工建材物流有限公司|Automatic concrete sampling and test block forming method|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI851340A|FI71619C|1985-04-03|1985-04-03|FOERFARANDE OCH APPARAT FOER MAETNING AV EGENSKAPERNA SPECIELLT FOERTAETNINGSBARHETEN AV EN TROEG, GJUTBAR MASSA.|
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