| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for blending an underground impervious wall material which can be self-restored to its original state following the lapse of time, even in case cracks are by any chance generated due to a high magnitude earthquake, and a method for applying the underground impervious wall. SOLUTION: In this method for blending an underground impervious wall material, cement and bentonite are weighed so that the blending ratio of the cement to the bentonite is 2:1 to 1:10. In addition, not lower than 300% of water are prepared for a setting material composed of the cement and the bentonite, and after mixing the water and the bentonite blended in the above ratio by stirring, the cement is added to the mixture and further, it is blended by stirring to obtain the underground impervious wall material. Thus it is possible to always maintain the cement/bentonite mixture soil in a plastic condition and impart a self-restoring nature to the mixture soil by setting the blending ratio of the cement and the bentonite as described. COPYRIGHT: (C)2006,JPO&NCIPI |
