SYSTEM FOR CONDITIONING WEAK SOIL IN NEUTRAL REGION INTO SOIL CAPABLE OF GIVING STRENGTH

摘要

PROBLEM TO BE SOLVED: To solve such a problem that there is a fear for an adverse effect on the environment by the soil conditioning technique for recycling because of the alkalinity of the soil thereby conditioned, while requirements for the recycling of an industrial waste comprising e.g. a sludge of high water content or a surplus soil in construction are rapidly increasing nowadays and most of the measures to meet the requirements comprise treatment with a cement-base soil conditioner.;SOLUTION: This system comprises mixing under stirring a weak soil with a soil conditioner consisting of two or more of hemihydrate gypsum, magnesium oxide, and a polymeric water absorbent or flocculant. This conditioning allows a weak soil to be granulated and hardened in a neutral region to produce a conditioned soil capable of giving a strength comparable to that of general soil. The conditioned soil can be effectively used similarly as general soil, thus realizing the recycling of a weak soil.;COPYRIGHT: (C)2003,JPO