JPS562529A - Manufacture of testing body for compression strength test of concrete - Google Patents
Manufacture of testing body for compression strength test of concreteInfo
- Publication number
- JPS562529A JPS562529A JP7807379A JP7807379A JPS562529A JP S562529 A JPS562529 A JP S562529A JP 7807379 A JP7807379 A JP 7807379A JP 7807379 A JP7807379 A JP 7807379A JP S562529 A JPS562529 A JP S562529A
- Authority
- JP
- Japan
- Prior art keywords
- laitance
- concrete
- layer part
- retarded layer
- cement setting
- 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
- Sampling And Sample Adjustment (AREA)
Abstract
PURPOSE: To make is easy to remove the laitance of a surface by applying the surface with a cement setting retardar after casting concret into a molding box, by removing the laitance and a retarded layer part a certain time later, and by performing capping processing.
CONSTITUTION: After concrete is cast into a molding box in the method of the Japanese Industrical Standard, a cement setting retardar is evenly applied on the surface of the concrete by spraying the surface with its solution. It should be applied enough to form a retarded layer of 2W3mm. After a certain time passes, the laitance of the surface and the retarded layer part are removed and then capping is put into effect to obtain a body to be tested. In this case, the retarded layer part is not developed sufficiently in strength under an influence of the cement setting retarder is formed and crumbly, so that the laitance can easily be removed by a with brush, chaplet hammer, or the like bordering on the retarded layer part.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7807379A JPS562529A (en) | 1979-06-22 | 1979-06-22 | Manufacture of testing body for compression strength test of concrete |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7807379A JPS562529A (en) | 1979-06-22 | 1979-06-22 | Manufacture of testing body for compression strength test of concrete |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS562529A true JPS562529A (en) | 1981-01-12 |
JPS6125302B2 JPS6125302B2 (en) | 1986-06-14 |
Family
ID=13651661
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7807379A Granted JPS562529A (en) | 1979-06-22 | 1979-06-22 | Manufacture of testing body for compression strength test of concrete |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS562529A (en) |
-
1979
- 1979-06-22 JP JP7807379A patent/JPS562529A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6125302B2 (en) | 1986-06-14 |
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