| Autor: |
Khayutin, Yu., Kozlov, E. |
| Zdroj: |
Power Technology and Engineering (formerly Hydrotechnical Construction); September 1971, Vol. 5 Issue: 9 p872-874, 3p |
| Abstrakt: |
Conclusions: | 1. | The use of worn forms to make laboratory test speciments of concrete reduces the average strength by 10% as compared with that of specimens made in forms meeting the requirements of the GOST. The spread in test results, characterized by the strength variance σ2, more than doubles. | | 2. | By using new forms and replacing old and worn forms more frequently it is possible to obtain more objective strength estimates and, in accordance with the applicable standards for evaluating the uniformity of concrete, to raise the technical-economic operating indices of the plant. | | 3. | Our study indicates the necessity of seeking efficient form designs and materials that will ensure long service life and satisfaction of the GOST requirements. |
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| Databáze: |
Supplemental Index |
| Externí odkaz: |
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