| 摘要 |
PURPOSE:To improve soil with a high organic content to high-strength ground with a relatively small amount of grouting by adding a pozzolanic substance, gypsums and calcined alunite, etc., to cements and mixing the resultant aqueous slurry of a solidifiable material in soil with the high organic content. CONSTITUTION:A solidifiable material slurry composed of (A) a solidifiable material prepared by adding (ii) 5-150pts.wt. pozzolanic substance such as granulated blast furnace slag or KANTO loam (volcanic ash soil distributed in Kanto district), (iii) 5-80pts.wt. gypsums such as gypsum dihydrate, (iv) 3-60pts.wt. calcined alunite obtained by calcining aluminum alum, etc., at 300-800 deg.C and powdering the calcined aluminum alum and (v) 0.1-1.0pt.wt. admixture such as boric acid or citric acid to (i) 100pts.wt. cements such as normal portland cement and (B) kneading water in an amount of 60-200wt.% based on the component (A) is mixed in soil with a high organic content by high-pressure jetting or mechanical stirring to carry out improvement. |
