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Various attempts have been made to decrease concrete shrinkage and cracking due to drying, and test methods have been studied; it is concluded that to obtain information on shrinkage of cement in concrete, test specimens should be of concrete; either neat paste or 1:2 mortar results are too erratic; ASTM Tentative Method C 157 covering volume change tests is in need of revision; results for 42 cements, with data for one yr on concrete volume changes, are included.
Various attempts have been made to decrease concrete shrinkage and cracking due to drying, and test methods have been studied; it is concluded that to obtain information on shrinkage of cement in concrete, test specimens should be of concrete; either neat paste or 1:2 mortar results are too erratic; ASTM Tentative Method C 157 covering volume change tests is in need of revision; results for 42 cements, with data for one yr on concrete volume changes, are included.
Volume changes in concrete
Matls Research Standards
Swayze, M.A. (author)
1961
11 pages
Article (Journal)
English
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