Evaluating influence of cementation in bentonite buffer material based on the swelling properties of bentonite ore

D. Ito, H. Komine, S. Morodome, T. Sekiguchi, G. Miura

研究成果: Conference contribution

抜粋

In geological disposal of high level radioactive waste, it is essential to start considering consolidation accompanying cementation, taking into consideration high earth pressure and solution of groundwater. For engineering application of natural analogue, the authors thought consolidated buffer material will have similar physical properties to bentonite ore. In this study, we aimed to quantitatively evaluate the influence of cementation on swelling properties. In order to achieve this aim, we focused on swelling pressure and swelling strain of bentonite, using two kinds of bentonite ore whose generation dates are different respectively. As a result, swelling pressure was decreased by approximately one order of magnitude due to the influence of cementation. In addition, the swelling strain of younger bentonite ore did not decline, but those of older bentonite ore declined about half of original whether consolidation was retained or not. Therefore, there is a possibility that the swelling deformation of buffer will decline as cementation gets stronger over the course of time.

元の言語English
ホスト出版物のタイトルProceedings of the 8th International Congress on Environmental Geotechnics Volume 3 - Towards a Sustainable Geoenvironment
編集者Liangtong Zhan, Yunmin Chen, Abdelmalek Bouazza
出版者Springer Berlin Heidelberg
ページ97-104
ページ数8
ISBN(印刷物)9789811322266
DOI
出版物ステータスPublished - 2019 1 1
イベント8th International Congress on Environmental Geotechnics, ICEG 2018 - Hangzhou, China
継続期間: 2018 10 282018 11 1

出版物シリーズ

名前Environmental Science and Engineering
ISSN(印刷物)1863-5520
ISSN(電子版)1863-5539

Conference

Conference8th International Congress on Environmental Geotechnics, ICEG 2018
China
Hangzhou
期間18/10/2818/11/1

ASJC Scopus subject areas

  • Information Systems
  • Environmental Engineering

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  • これを引用

    Ito, D., Komine, H., Morodome, S., Sekiguchi, T., & Miura, G. (2019). Evaluating influence of cementation in bentonite buffer material based on the swelling properties of bentonite ore. : L. Zhan, Y. Chen, & A. Bouazza (版), Proceedings of the 8th International Congress on Environmental Geotechnics Volume 3 - Towards a Sustainable Geoenvironment (pp. 97-104). (Environmental Science and Engineering). Springer Berlin Heidelberg. https://doi.org/10.1007/978-981-13-2227-3_12