Analysis of microstructural images of dry and water-saturated compacted bentonite samples observed with X-ray micro CT

Tomioka, Satoshi; Kozaki, Tamotsu; Takamatsu, Hidenori et al.

Applied Clay Science, 2010, 47(1-2), 65-71

Permalink : https://hdl.handle.net/2115/42844

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アクセス権
open access
URI
https://hdl.handle.net/2115/42844
タイトル
Analysis of microstructural images of dry and water-saturated compacted bentonite samples observed with X-ray micro CT
著者
Tomioka, Satoshi ; Kozaki, Tamotsu ; Takamatsu, Hidenori ; Noda, Natsuko ; Nisiyama, Shusuke ; Kozai, Naofumi ; Suzuki, Satoru ; Sato, Seichi
e-Rad_Researcher
40237110
著者名
Tomioka, Satoshi
e-Rad_Researcher
60234746
著者名
Kozaki, Tamotsu
著者名
Takamatsu, Hidenori
著者名
Noda, Natsuko
e-Rad_Researcher
30333628
著者名
Nisiyama, Shusuke
著者名
Kozai, Naofumi
著者名
Suzuki, Satoru
著者名
Sato, Seichi
言語
英語
キーワード
micro computed tomography
geological disposal
montmorillonite
compacted bentonite
発行日
2010-01
出版者
Elsevier B.V.
収録物名
Applied Clay Science
巻(号)
47(1-2)
ページ
65-71
抄録
Compacted bentonite, of which the major clay mineral is montmorillonite, is a candidate buffer material for geological disposal of high-level radioactive waste. In this study, a microfocus X-ray computed tomography (micro-CT, X-ray micro-scope), which enables non-destructive, three-dimensional observation of the interior microstructure of a sample with high resolution (several microns), examined compacted montmorillonite samples under dry and water-saturated states. The images thus obtained were analyzed by a computer code developed for this study to obtain the information on the size and shape of montmorillonite grains in the samples before and after the water saturation. From the results of the image analysis, it can be supposed that the outer montmorillonite sheets of grains swelled and formed a gel, whereas the inner montmorillonite sheets did not change significantly in the water-saturation process.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
PISSN
0169-1317
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1016/j.clay.2008.09.001