| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a cement-based solidifying agent for organic soil which exhibits strength of treated soil by comprising a specific proportion of Portland cement, gypsum and an absorbent which absorbs organic acids components contained in organic soil without inhibiting hydration reaction of Portland cement. SOLUTION: A cement-based solidifying agent comprises 70-90 wt.% of Portland cement, 10-30 wt.% of gypsum and 0.5-10 wt.% of an absorbent. The absorbent is a material that can absorb organic acid components in organic soil, such as activated carbon and zeolite (natural zeolite and synthetic zeolite). The solidifying agent comprising 20-40 wt.% of Portland cement, 40-60 wt.% of blast furnace slag fine powder, 10-30 wt.% of gypsum and 0.5-10 wt.% of the absorbent contains a mixture of 0.5-10 wt.% of a sulfate and/or 0.5-10 wt.% of a chloride based on the solidifying agent, wherein a specific surface area of Portland cement is 3,000-5,500 cm<2> /g and a specific surface area of gypsum is 3,000-7,000cm<2> /g.</p> |
