INJECTION CHEMICAL SOLUTION COMPOSITION FOR FILLING IN HOLE, AND METHOD FOR FILLING SPACE WITH THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an injection chemical liquid composition which is used for filling spaces formed between a concrete structure and a peripheral bedrock or ground in a tunnel, an underground structure, a high building base structure or the like, or spaces formed in the bedrock or ground, is little in environmental loading on a filling work, can give a foamed product that reduces a soil-staining degree, is excellent in workability and is good in storage stability.;SOLUTION: This injection chemical liquid composition which is used for filling spaces and comprises an alkali silicate aqueous solution (A) and an organic polyisocyanate (B) is characterized in that the component (B) is polymeric MDI (B1) containing binuclear compounds in an amount of 20 to 70 wt.%, or an isocyanate group-terminated urethane prepolymer obtained by reacting the polymeric MDI (B1) with a active hydrogen group-containing compound (B2) having a number-average mol.wt. of 32 to 10,000 and in that the binuclear compounds in the component (B1) contains 2,2'-MDI and 2,4'-MDI in a total amount of 5 to 60 wt.%, and a method for filling spaces with the same is provided.;COPYRIGHT: (C)2002,JPO