CONCRETE ADMIXTURE, CONCRETE COMPOSITION AND CONCRETE HARDENED BODY

摘要

PROBLEM TO BE SOLVED: To provide a concrete admixture preventing the occurrence of cracking in a concrete hardened body even when a mold is removed at an early stage so as to be 2 days after the placing. SOLUTION: In the concrete admixture containing anhydrous gypsum, hauyne and quicklime, the mass ratio of anhydrous gypsum to hauyne in the concrete admixture is 7-14. It is favorable that the mass ratio of anhydrous gypsum to quicklime is 0.8-5.0. COPYRIGHT: (C)2008,JPO&INPIT