MASONRY STRUCTURE BLOCK FOR IMPROVED FREEZING AND THAWING DURABILITY AND ADMIXTURE OF MASONRY STRUCTURE CONCRETE

摘要

PROBLEM TO BE SOLVED: To obtain a masonry structure concrete having improved freezing and thawing durability. ;SOLUTION: This composition comprises 5-25% based on total dry weight of the composition of a hydration cement binder, 75-95% based on total dry weight of solid in the composition of a relatively fine aggregate part and 0.01-1.0% (s/s cement) of betaine. The composition has an essentially zero slump when tested by a standard cane method so as to measure a slump in a wet state.;COPYRIGHT: (C)2000,JPO