|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >
Analysis of microstructural images of dry and water-saturated compacted bentonite samples observed with X-ray micro CT
| Title: | Analysis of microstructural images of dry and water-saturated compacted bentonite samples observed with X-ray micro CT |
| Authors: | Tomioka, Satoshi Browse this author →KAKEN DB | | Kozaki, Tamotsu Browse this author →KAKEN DB | | Takamatsu, Hidenori Browse this author | | Noda, Natsuko Browse this author | | Nisiyama, Shusuke Browse this author →KAKEN DB | | Kozai, Naofumi Browse this author | | Suzuki, Satoru Browse this author | | Sato, Seichi Browse this author |
| Keywords: | micro computed tomography | | geological disposal | | montmorillonite | | compacted bentonite |
| Issue Date: | Jan-2010 |
| Publisher: | Elsevier B.V. |
| Journal Title: | Applied Clay Science |
| Volume: | 47 |
| Issue: | 1-2 |
| Start Page: | 65 |
| End Page: | 71 |
| Publisher DOI: | 10.1016/j.clay.2008.09.001 |
| Abstract: | 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. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/42844 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 富岡 智
|
