GROUT MATERIAL COMPOSITION AND GROUT MATERIAL USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a grout material which does not have lower fluidity than that of conventional cement grout materials, can prevent a phase separation, and can inhibit cracks caused by the cross-sectional temperature stresses or dry contractions after repairs. SOLUTION: This grout material composition is characterized by adding 1 to 5 pts.wt. of a dry contraction-reducing agent and 120 to 200 pts.wt. of a fine aggregate to 100 pts.wt. of an inorganic cement powder comprising a cement, classified fly ash having a specific surface area (powderized degree) of >=5,000 cm<2> /g measured by Blaine's method, and a calcium sulfoaluminate expanding material, and a grout material uses the grout material composition.