| 摘要 |
PROBLEM TO BE SOLVED: To provide a water reducing agent composition which solves the problem that, in accordance with the lot and brand of the cement to be used, the fluidity of mortar or concrete admixed with a polycarboxylate based water reducing agent is remarkably different(reduced), and to provide mortar or concrete using the same. SOLUTION: (1) The water reducing agent composition comprises: a polycarboxylate based water reducing agent: and cyanamide. (2) The mortar or concrete is obtained by adding a water reducing agent composition comprising cyanamide of 2 to 30 pts.mass to 100 pts.mass of the solid content of the polycarboxylate based water reducing agent based on 100 pts.mass of the cement or a cement bonder by 0.12 to 1.5 pts.mass in terms of a solid content. COPYRIGHT: (C)2010,JPO&INPIT |
