Title:
Slump Loss with Type “K” Shrinkage Compensating Cement Concretes and Admixtures
Author(s):
Bayard M. Call
Publication:
Concrete International
Volume:
1
Issue:
1
Appears on pages(s):
44-47
Keywords:
admixtures; hydroxylated carboxylic acids; lignosulfonate; shrinkage-compensating concretes; slump tests
DOI:
Date:
1/1/1979
Abstract:
Slump loss with Type “K” shrinkage compensating cement concrete can be a serious problem in the field especially when certain types of admixtures are included in the mix. The purpose of this work was to identify types of admixtures that should be avoided in situations where slump loss would be undesirable. The results show that only the Type D lignins decreased the slump loss; Type A lignins and Type D hydroxylated carboxylic acids had little effect on slump loss; and Type A hydroxylated carboxylic acids and Type A multicomponents increased the slump loss. Results with Type D multi-components were divided, and suggest that a laboratory check be made before using in the field.