Cement-based solidifying material and manufacturing method of cement-based solidifying material

摘要

PROBLEM TO BE SOLVED: To suppress the elution amount of arsenic from soil after ground improvement without limiting the type or unit of raw material and fuel. A cement-based solidifying material is a cement-based solidifying material containing cement clinker, gypsum, and bypass dust, and the cement-based solidifying material has a brain specific surface area of 3000 cm2 / g or more and is cement-based solidified. The addition ratio of bypass dust to the material is 0.4% by mass or more and 7.5% by mass or less, and the arsenic content derived from bypass dust in the cement-based solidifying material is 0.1 mg / kg or more and 1.3 mg. It is less than / kg. [Selection diagram] Fig. 4