TWO PACK TYPE GROUT MATERIAL SHOWING NEUTRAL REGION-CONSOLIDATION, PLASTIC AND UNDERWATER ANTIWASHOUT

摘要

PROBLEM TO BE SOLVED: To provide a grout material allowing solidification in a neutral region (pH 6.0-8.6) while using cement, exhibiting a plastic property in use, and preventing water from clouding when the grout material is filled into water.SOLUTION: The grout material is made of a mixture consisting of an A-material containing aluminum sulfate and galactomannan and a B-material containing cement and a magnesium compound. It is preferable that when the grout material is filled in a cavity or a gap, the A-material and the B-material are made into gel by stirring, and then stirring is continued and the grout material, obtained by making the material into slurry until reaching a flow value specified in JHS 313 to be 150-210 mm, is pumped to fill in the cavity.