| 摘要 |
PROBLEM TO BE SOLVED: To provide a grout which can prevent a material separation phenomenon and can be free from the occurrence of cracks caused by cross-sectional temperature stress or dry contraction after repairs, while having a flowability equal to or higher than that of a conventional cement grout material. SOLUTION: The composition for the grout comprises 100 pts.mass of a hydraulic inorganic powder comprising a low-heat portland cement and a calcium sulfoaluminate expanding material, 0.01-0.1 pt.mass of an oxycarboxylic acid and/or an oxycarboxylate, 0.5-3 pts.mass of at least one selected from the group consisting of an alkali carbonate, an alkali hydrogen carbonate, and an alkali sulfate compound, 1-5 pts.mass of a dry contraction-reducing agent, and 100-200 pts.mass of a fine aggregate. The composition is mixed with water, to prepare the grout. COPYRIGHT: (C)2008,JPO&INPIT |
