COMPOSITION FOR SOIL-QUALITY STABILIZATION TREATMENT

摘要

PROBLEM TO BE SOLVED: To obtain a less expensive composition having a soil quality-stabilizing activity stronger than an ordinary cement, quick lime or slaked lime on soft weak soil having high water content or mud. SOLUTION: This composition contains a heat-dehydrated material of a calcium sulfoaluminate hydrate. An example of the heat-dehydrated material includes a heat-dehydrated material of ettringite (3CaO.Al2 O3 .3CaSO4 .30-32H2 O) or tricalcium monosulfoaluminate hydrate (3CaO.Al2 O3 .CaSO4 .10-18H2 O). The addition of one kind or more selected from quick lime, slaked lime, an ordinary portland cement, an alumina cement, water granulated slug from a blast furnace and gypsum to a heat-hydrated material further improves soil-quality stabilizing activity.