SUPER-QUICK HARDENING, UNDERWATER NON-SEPARABLE CEMENT COMPOSITION; SUPER-QUICK HARDENING, UNDERWATER NON-SEPARABLE PREMIXED MORTAR COMPOSITION; AND UNDERWATER NON-SEPARABLE GROUT MORTAR

摘要

PROBLEM TO BE SOLVED: To provide a super-quick hardening, underwater non-separable cement composition; a super-quick hardening, underwater non-separable premixed mortar composition; and a super-quick hardening, underwater non-separable grout mortar which have excellent underwater non-separability, advance the opening time of a construction site, and furthermore can achieve sufficient strength development for their hardened bodies.;SOLUTION: The super-quick hardening, underwater non-separable cement composition includes cement, calcium aluminate, gypsum, a powdery thickener containing an alkyl allyl sulfonate and an alkyl ammonium salt, a setting modifier and a polycarboxylic acid-based water reducer. Furthermore, the super-quick hardening, underwater non-separable cement composition is made by containing a silicone-based defoamant and a gas foaming substance. The super-quick hardening, underwater non-separable premixed mortar composition is produced by containing the super-quick hardening, underwater non-separable cement composition and fine aggregates; and the super-quick hardening, underwater non-separable grout mortar is produced by mixing the super-quick hardening, underwater non-separable premixed mortar composition and water.;COPYRIGHT: (C)2011,JPO&INPIT