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Partially Compacted Weight of Concrete as a Measure of Workability.
- Source :
- Journal of the American Concrete Institute; Apr1966, Vol. 63 Issue 4, p441-450, 58p
- Publication Year :
- 1966
-
Abstract
- A study of the compacting-factor method of measuring workability of small-aggregate concrete (1½ in.) indicated that: (a) the degree to which concrete heaps when a mold is allowed to overfill from the discharge of a mixer reaches a maximum at an intermediate workability and decreases as the mixture gets either drier or wetter; and (b) the net, loose weight of concrete in a mold after strike off increases with increasing workability. The net, loose weight of concrete in a mold filled to overflowing and then struck off could form the basis for controlling workability of mixtures having a slump not greater than 3 in. Studies using mixtures with 6-in. aggregate indicated that heaping weight, struck-off weight, and compacting factor increase with increased water content until the slump reaches from 1½ to 3 in. and then they decrease. Routine determinations of heaping weight or struck-off loose weight might be used to detect batches of excessive or deficient water content which could be rejected before delivery to the forms. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00028061
- Volume :
- 63
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Journal of the American Concrete Institute
- Publication Type :
- Academic Journal
- Accession number :
- 89213603
- Full Text :
- https://doi.org/10.14359/7632