JPS5692455A - Prior inspecting method of concrete quality - Google Patents
Prior inspecting method of concrete qualityInfo
- Publication number
- JPS5692455A JPS5692455A JP16987479A JP16987479A JPS5692455A JP S5692455 A JPS5692455 A JP S5692455A JP 16987479 A JP16987479 A JP 16987479A JP 16987479 A JP16987479 A JP 16987479A JP S5692455 A JPS5692455 A JP S5692455A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- amount
- concrete
- mortar
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
PURPOSE: To rapidly inspect the adequateness or not of concrete quality prior to placement of concrete by deciding water-cement ratios.
CONSTITUTION: At the unloading point from a ready-mixed concrete car, a suitable amount of ready-mixed concrete is sampled into a bucket 1. After gravel is separated with a sieve 2, mortar (a) for measuring water amount and mortar (b) for measuring cement amount are weighed. The mortar (a) of constant volume is put into an Erlenmeyer flask and the temp.-corrected underwater weight U is measured by using a balance 12 and a thermometer 8. Also, the mortar (b) is put into a constant volume measuring flask 4, and while it is repeatedly stirred and allowed to stand, the temp.-corrected specific gravity is measured with a hydrometer 7 and the thermometer 8. Cement amount C is obtained from the measured values and the specific gravity-cement amount relation data having beforehand been obtained, and further, water amount W is obtained based on the underwater weight U, the cement amount C and the specific gravity of the cement and aggregate having beforehand been obtained. From the water amount W and the cement amount C, a water- cement ratio W/C is obtained. Thereby, whether the ready-mixed concrete is of the quality at which necessary strength is obtainable after setting or not is decided prior to placement of the concrete.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16987479A JPS5843696B2 (en) | 1979-12-25 | 1979-12-25 | Preliminary inspection method for concrete quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16987479A JPS5843696B2 (en) | 1979-12-25 | 1979-12-25 | Preliminary inspection method for concrete quality |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5692455A true JPS5692455A (en) | 1981-07-27 |
| JPS5843696B2 JPS5843696B2 (en) | 1983-09-28 |
Family
ID=15894549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16987479A Expired JPS5843696B2 (en) | 1979-12-25 | 1979-12-25 | Preliminary inspection method for concrete quality |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5843696B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59195159A (en) * | 1983-04-20 | 1984-11-06 | Takenaka Komuten Co Ltd | Method and device for inspecting quality of ready-mixed concrete |
| JPS63214666A (en) * | 1987-03-03 | 1988-09-07 | Takenaka Komuten Co Ltd | Device for deciding strength of soil column row |
| ITTO20090504A1 (en) * | 2009-07-06 | 2011-01-07 | Embraco Europ Srl | ASSEMBLY PROCEDURE FOR ELECTRIC POWER SUPPLY CABLES TO A STATOR |
| CN104569361A (en) * | 2015-01-06 | 2015-04-29 | 同济大学 | Cement chemical shrinkage test device and method |
| CN106092766A (en) * | 2016-06-02 | 2016-11-09 | 青神鑫统领建材有限公司 | A kind of assay method of low water-cement ratio strength of cement mortar |
| CN114002107A (en) * | 2021-12-09 | 2022-02-01 | 中建八局第四建设有限公司 | Concrete strength prediction device |
-
1979
- 1979-12-25 JP JP16987479A patent/JPS5843696B2/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59195159A (en) * | 1983-04-20 | 1984-11-06 | Takenaka Komuten Co Ltd | Method and device for inspecting quality of ready-mixed concrete |
| US4615215A (en) * | 1983-04-20 | 1986-10-07 | Takenaka Komuten Co., Ltd. | Method and apparatus for testing ready-mixed concrete |
| JPS63214666A (en) * | 1987-03-03 | 1988-09-07 | Takenaka Komuten Co Ltd | Device for deciding strength of soil column row |
| ITTO20090504A1 (en) * | 2009-07-06 | 2011-01-07 | Embraco Europ Srl | ASSEMBLY PROCEDURE FOR ELECTRIC POWER SUPPLY CABLES TO A STATOR |
| WO2011004312A1 (en) * | 2009-07-06 | 2011-01-13 | Embraco Europe S.R.L. | Method for assembling electric power supply cables on a stator |
| US8505191B2 (en) | 2009-07-06 | 2013-08-13 | Embraco Europe S.R.L. | Method for assembling electric power supply cables on a stator |
| CN104569361A (en) * | 2015-01-06 | 2015-04-29 | 同济大学 | Cement chemical shrinkage test device and method |
| CN104569361B (en) * | 2015-01-06 | 2016-01-20 | 同济大学 | A kind of chemical contraction of cement proving installation and method of testing |
| CN106092766A (en) * | 2016-06-02 | 2016-11-09 | 青神鑫统领建材有限公司 | A kind of assay method of low water-cement ratio strength of cement mortar |
| CN114002107A (en) * | 2021-12-09 | 2022-02-01 | 中建八局第四建设有限公司 | Concrete strength prediction device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5843696B2 (en) | 1983-09-28 |
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