Observation of the interaction between bentonite and hyperalkaline fluid by X-ray computed tomography and geochamical modeling of the interaction

Nakabayashi, Ryo*; Elakneswaran, Y.*; Chino, Daisuke*; Sato, Tsutomu*; Yoneda, Tetsuro*; Oda, Chie ; Kaneko, Katsuhiko*

Flow-through dissolution experiment was carried out using compacted bentonite with hyperalkaline solutions. In-situ observation of bentonite during the experiment was concocted by using X-CT analysis. Time-dependence of secondary minerals formation inside the compacted bentonite during the experiment was analysed and quantified based on the observation. Geochemical modeling using a 1D reactive transport code was able to reproduct time-dependence of space-distribution of minerals in the bentonite and Si, Al concentrations in the output solutions.

Language	:	Japanese
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Meeting title	:	日本原子力学会2011年秋の大会
Held date	:	2011/09
Location (city)	:	北九州
Location (country)	:	日本
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Keywords	:	no keyword
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Cooperating Institute	:	北海道大学

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Registration No. : BB20110680
JAEA Abstracts No. :
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