SU779882A1 - Method of determining setting time of concrete mass - Google Patents
Method of determining setting time of concrete mass Download PDFInfo
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- SU779882A1 SU779882A1 SU782629432A SU2629432A SU779882A1 SU 779882 A1 SU779882 A1 SU 779882A1 SU 782629432 A SU782629432 A SU 782629432A SU 2629432 A SU2629432 A SU 2629432A SU 779882 A1 SU779882 A1 SU 779882A1
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- SU
- USSR - Soviet Union
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- time
- setting
- electrical resistance
- electromotive force
- setting time
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
1one
Изобретение относитс к области -s технологии гидравлических в жущих веществ ,This invention relates to the field of hydraulic technology in a burning substance,
Известен способ определени сроков схватывани цементного теста, 5 основанный на измерении глубины погружени в раствор ощ.оделенного пенстратора под действием посто нной силы, а именно собственного веса подвижной части l. 0There is a known method for determining the setting time of cement paste, 5 based on measuring the depth of immersion in the solution of a finely divided penstrator under the action of constant force, namely, the dead weight of the movable part l. 0
Недостаток способа заключаетс в значительных затратах времени оператора , больших погрешност х и низкой воспроизводимости измерений вследствие больших допусков контрольной 5 глубины погружени .The disadvantage of the method lies in the considerable time spent by the operator, large errors and low reproducibility of measurements due to the large tolerances of the control 5 immersion depth.
Наиболее близким к изобретению по технической сущности и достигаемому результату вл етс способ определени сроков схватывани цементного 20 теста, включающий измерение электрического сопротивлени и электродвижущей силы .The closest to the invention according to the technical essence and the achieved result is a method for determining the setting time of cement test 20, including the measurement of electrical resistance and electromotive force.
Недостаток способа заключаетс в том, что он не обеспечивает необхо- 25 ДИМОЙ точности.The disadvantage of the method is that it does not provide the necessary 25 DIMA accuracy.
Целью изобретени вл етс повышение точности и обеспечение возможности определени сроков схватывани растворов водных в жущихвеществ в . 30The aim of the invention is to improve the accuracy and ensure the possibility of determining the timing of the setting of aqueous solutions in living substances. thirty
различных температурно-влажностных услови х.various temperature and humidity conditions.
Цель достигаетс тем, что в способе определени сроков схватывани цементного теста, включающем измерение электрического сопротивлени и электродвижущей силы, электрическое сопротивление и электродвижущую силу измер ют во времени, начало схватывани определ ют по времени наступлени минимального значени электрического сопротивлени , а конец схватывани - по времени резкого уменьшени электродвижущей силы и одновременного возрастани электрического сопротивлени . Кроме того, начало схватывани определ ют как момент времени, при котором производна функци величин электросопротивлени от времени равна нулю, а конец схватывани определ ют как момент времени, при котором производные функций величин электросопротивлени от времени и электродвижущей силы от времени приобретают противоположные знаки.The goal is achieved by the fact that in the method for determining the setting time of a cement paste, which includes measuring electrical resistance and electromotive force, electrical resistance and electromotive force are measured in time, the beginning of setting is determined by the onset of the minimum value of electrical resistance, and the end of setting by sharp time reducing electromotive force and simultaneously increasing electrical resistance. In addition, the beginning of setting is defined as the time at which the derivative of the electrical resistivity values is zero, and the end of the setting is defined as the time at which the derivatives of the functions of electrical resistivity versus time and electromotive force from time acquire opposite signs.
Предлагаемый способ основан на том, что величина электрофизических характеристик бетона, таких как омическое сопротивление, электродвиThe proposed method is based on the fact that the value of the electrophysical characteristics of concrete, such as ohmic resistance, electric motors
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782629432A SU779882A1 (en) | 1978-06-16 | 1978-06-16 | Method of determining setting time of concrete mass |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782629432A SU779882A1 (en) | 1978-06-16 | 1978-06-16 | Method of determining setting time of concrete mass |
Publications (1)
Publication Number | Publication Date |
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SU779882A1 true SU779882A1 (en) | 1980-11-15 |
Family
ID=20770467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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SU782629432A SU779882A1 (en) | 1978-06-16 | 1978-06-16 | Method of determining setting time of concrete mass |
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SU (1) | SU779882A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2504681A1 (en) * | 1981-04-27 | 1982-10-29 | Le Gorny I | METHOD FOR DETERMINING THE KINETIC STRUCTURAL FORMATION OF A BINDER AND DEVICE USING THE SAME |
WO2013097172A1 (en) * | 2011-12-30 | 2013-07-04 | 江苏博特新材料有限公司 | Method for testing setting time of cement-based material |
CN102590483B (en) * | 2011-12-29 | 2015-12-16 | 江苏苏博特新材料股份有限公司 | The method of testing of setting time of cement-based material |
-
1978
- 1978-06-16 SU SU782629432A patent/SU779882A1/en active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2504681A1 (en) * | 1981-04-27 | 1982-10-29 | Le Gorny I | METHOD FOR DETERMINING THE KINETIC STRUCTURAL FORMATION OF A BINDER AND DEVICE USING THE SAME |
CN102590483B (en) * | 2011-12-29 | 2015-12-16 | 江苏苏博特新材料股份有限公司 | The method of testing of setting time of cement-based material |
WO2013097172A1 (en) * | 2011-12-30 | 2013-07-04 | 江苏博特新材料有限公司 | Method for testing setting time of cement-based material |
US9389216B2 (en) | 2011-12-30 | 2016-07-12 | Sobute New Materials Co., Ltd. | Method for testing setting time of cement-based material |
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