ADMIXTURE FOR SOIL IMPROVEMENT, ENGINEERING METHOD FOR IMPROVING SOIL AND IMPROVED SOIL

摘要

PROBLEM TO BE SOLVED: To provide an admixture for soil improvement, capable of reducing binding inhibition of cement to soil caused by an organic substance consisting mainly of corrosive acid such as humic acid and increasing hardness of soil, engineering method for improving soil and improved soil. ;SOLUTION: This admixture for soil improvement comprises eight or more kinds of cations selected from Ca++, Na+, Mg++, K+, NH4+, Ba++, Fe3+, Al3+, Mn4+, Co++ and Ti4+ and two or more kinds of anions. selected from Cl-, SO4-- and PO43- and an organic acid as main components. Soil can be improved by mixing the above admixture for soil improvement with soil in which cement and adequate amount of water are kneaded.;COPYRIGHT: (C)2001,JPO