초록

A cement admixture composed of a mixture of lower alkyl ether oxyalkylene adducts with a sulfonated organocyclic material to provide cement compositions of mortar and concrete which inhibit drying shrinkage while attaining very high slump and/or increased compressive strength.

대표청구항 ▼

[ What is claimed is:] [1.] A cement admixture comprising a mixture of (a) at least one alkyl ether oxyalkylene adduct represented by the formula RO(AO).sub.n H wherein A is a C.sub.2 -C.sub.4 alkylene radical, O is oxygen, R is a C.sub.1 -C.sub.7 alkyl or C.sub.5 -C.sub.6 cycloalkyl group, and n is

[ What is claimed is:] [1.] A cement admixture comprising a mixture of (a) at least one alkyl ether oxyalkylene adduct represented by the formula RO(AO).sub.n H wherein A is a C.sub.2 -C.sub.4 alkylene radical, O is oxygen, R is a C.sub.1 -C.sub.7 alkyl or C.sub.5 -C.sub.6 cycloalkyl group, and n is an integer of from 1 to 5; and (b) a sulfonated organocyclic material in a weight ratio of (a) to (b) in the range of 0.7 to about 7.