| 摘要 |
PROBLEM TO BE SOLVED: To provide a powdery underwater non-separable cement composition which can be dry-blended, and whose workability in an on-site operation can be improved as a pre-mix article, and to provide grout mortar which has excellent underwater non-separability, fluidity and the maintaining performance thereof, can achieve sufficient strength development in both of air and water, and has non-shrinkability. SOLUTION: Disclosed is an underwater non-separable mortar composition comprising: cement; an expansive agent; a powdery thickener containing an alkylaryl sulfonate and an alkyl ammonium salt; a polycarboxylic acid based water reducing agent; a silicone based defoamant; and a polyether based defoamant. Also disclosed is a premix type underwater non-separable mortar composition comprising: the cement composition comprising a gas foaming substance; and fine aggregates. Also disclosed is underwater non-separable grout mortar obtained by kneading: the mortar composition; and water. COPYRIGHT: (C)2009,JPO&INPIT |
