THICKENING AGENT COMPOSITION FOR IMPARTING ANTI-WASHOUT PROPERTY TO CONCRETE UNDER WATER

摘要

[Problem] To provide a high-fluidity concrete which can exhibit high strength at an early age and has a good anti-washout property under water and good workability. [Solution] The problem can be solved by adding a thickening agent composition comprising a cellulose ether, diutan gum, polyacrylamide, bentonite and calcium carbonate to a concrete. The composition may additionally contain at least one calcium salt selected from the group consisting of calcium nitrite, calcium nitrate, calcium formate, calcium thiocyanate and calcium acetate, cement and/or an antifoaming agent.