| 摘要 |
PROBLEM TO BE SOLVED: To provide an impervious body using bentonite-mixed soil, in which any erosion or sliding surface formation phenomenon can be prevented from being caused without reducing the impervious function. SOLUTION: This impervious body consists of a frame having an open bottom, bentonite mixed soil with which the inside of the frame is packed and an impervious sheet laid on the outer surface of a top plate of the frame integrally with the top plate.
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