| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
This study focuses on soil-bentonite which is one of the most common barrier materials, and consists of bentonite and in-situ soil. Various laboratory tests were conducted from the viewpoint of: 1) on-site quality assessment, and 2) self-sealing capability against hydraulic defects. The experimental results indicate that the piezocone test, which is widely applied on site investigations, can detect the hydraulic defects caused by less bentonte amount with a spatial continuity. It was also verified that the soil-bentonite can display self-sealing capability and recover its hydraulic barrier performance when the specimen has an intentional defect due to the combined effects of its deformability and the reswelling of bentonite.
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