MUDDY SOIL SOLIDIFYING MATERIAL AND MUDDY SOIL SOLIDIFYING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a muddy soil solidifying material and a muddy soil solidifying method for efficiently changing muddy soil into neutral improved soil with a practical corn exponent without producing muddy water even if exposed to rainwater. SOLUTION: This muddy soil solidifying material is obtained by combining (A) a water absorptive coagulant and (B) a solidification reforming material containing (a) hydraulic gypsum and (b) fine waste sand obtained in manufacturing a casting sand mold, or recovering, reclaiming or classifying molding sand after casting. It is preferable that the solidification reforming material (B) further contains (c) calcium aluminate or at least one kind of solidification accelerating material selected from inorganic substance and mineral with calcium aluminate as an essential component, at the ratio of 1-50 pts. mass to 100 pts. mass of the hydraulic gypsum.