| Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2020: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
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| Outline of Final Research Achievements |
This study quantitatively evaluated the self-sealing properties of bentonite buffer material, a key component of barrier materials, with a view to contributing to the engineering of high-level radioactive waste geological disposal. Specifically, a one-dimensional swelling and deformation test by water absorption on the top end surface, a swelling pressure test, and a self-sealing measurement experiment were conducted, and a quantitative evaluation method for self-sealing performance was proposed based on various databases obtained.
The results obtained in this study may contribute to the design of bentonite-based buffer materials from the viewpoint of self-sealing properties.
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