PRODUCTION OF CONCRETE IMPROVED IN FREEZE-THAW RESISTANCE

摘要

PURPOSE:To obtain the title concrete by incorporating concrete with surfactant foam. CONSTITUTION:The objective concrete can be obtained by incorporating (A) a concrete composition comprising (1) cement, (2) aggregates, (3) a (high- performance) water reducing agent, (4) a high-early-strength-developing agent, (5) a retarder, and (6) a thickening agent with (B) 2-6vol.% of foam 1-1000mum in mean bubble size of an aqueous surfactant solution with a surface tension of 14-40dyne/cm.