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Methods for determining the water and cement content of fresh concrete
Abstract Quality control of concrete has taken many forms in past years. The most traditional method has been to conduct compression tests on hardened cylinders or cubes. Although this has been a satisfactory method, it has one major deficiency, and that is the testing is done after the concrete has set. If the concrete does not meet specifications, then costly and time consuming reconstruction must take place. Several accelerated testing techniques have been developed recently, and although these tests are accomplished in one or two days, as compared to the usual 28 days, they still are conducted on hardened concrete. The ideal test, of course, is a test that can be conducted on the plastic or fresh concrete. It is these methods of analysis that are being discussed in this paper. Of the many factors that affect the strength and durability of the concrete, the water and the cement contents are the most critical. These parameters expressed in terms of water to cement ratio provide the best indicator of the quality of the concrete. They are the prime factors in controlling the porosity, strength and durability of the hardened concrete.
Methods for determining the water and cement content of fresh concrete
Abstract Quality control of concrete has taken many forms in past years. The most traditional method has been to conduct compression tests on hardened cylinders or cubes. Although this has been a satisfactory method, it has one major deficiency, and that is the testing is done after the concrete has set. If the concrete does not meet specifications, then costly and time consuming reconstruction must take place. Several accelerated testing techniques have been developed recently, and although these tests are accomplished in one or two days, as compared to the usual 28 days, they still are conducted on hardened concrete. The ideal test, of course, is a test that can be conducted on the plastic or fresh concrete. It is these methods of analysis that are being discussed in this paper. Of the many factors that affect the strength and durability of the concrete, the water and the cement contents are the most critical. These parameters expressed in terms of water to cement ratio provide the best indicator of the quality of the concrete. They are the prime factors in controlling the porosity, strength and durability of the hardened concrete.
Methods for determining the water and cement content of fresh concrete
Williamson, R. (author)
Materials and Structures ; 18 ; 269-278
1985-07-01
10 pages
Article (Journal)
Electronic Resource
English
Methods for determining the water and cement content of fresh concrete
Online Contents | 1985
Methods for determining the water and cement content of fresh concrete
| Online Contents | 1985
Methods for determining the water and cement content of fresh concrete
| Springer Verlag | 1985
Cement Content of Fresh Concrete
| NTIS | 1976