SEALING METHOD USING BENTONITE

摘要

PROBLEM TO BE SOLVED: To provide a sealing method using bentonite which minimizes the amount of bentonite filled in a sealing mat. SOLUTION: The method is carried out in the following manner. First a bag body formed of a pair of water permeable cloths 24a is laid on a cut-off work execution surface. The bag body has a closed periphery and has its interval restrained by interval adjusting means 24b. Then a mixture 26 of bentonite particles and a soil material mixed at a suitable ratio is filled in the bag body to obtain the sealing mat 12, and by soaking the cut-off mat 12 in water, the bentonite in the mixture 26 is hydrated and swollen, to thereby form a sealing layer. COPYRIGHT: (C)2004,JPO&NCIPI