GROUT AND PRODUCTION METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a grout which shows a pH of the neutral region, e.g. 5.8-8.6, during pressure feeding and filling, does not cause material separation in water, has good plasticity and exerts high solidification intensity after filling.SOLUTION: A grout comprises an acid or its salt, a magnesium-containing substance, an auxiliary material, a thickener and water. The acid or its salt is e.g. a combination of aluminum sulfate and an acid, such as nitric acid. The thickener is e.g. a glycol-based thickener or an ester-based thickener.