Micro-structure of Bentonite Clay and Diffusion Coefficient Given by Multiscale Homogenization Analysis

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概要

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• Bentonite consists of nanometer scale of smectitic clay minerals (mainly montmorillonite) and micrometer scale of macro-grains (mainly quatz). Properties of saturated bentonite are characterized by hydrated clay minerals. For a diffusion problem in bentonite we developed a new multiscale homogenization analysis (HA) procedure which relates microscale characteristics with a macroscopic behavior. We discuss diffusion properties of tritium water (HTO) compared with experimental data. Microscopic properties of the montmorillonite hydrate such as diffusivity of chemical species which are used in HA are determined by a molecular dynamics (MD) simulation method. We show the calculated results are consistent with macroscale experimental data.

• 社団法人日本材料学会の論文
• 2003-06-15

著者

• KITAYAMA Kazumi

  Nuclear Waste Management Organization of Japan

• Fujii Naoki

  National Institute Of Advanced Industrial Science And Tech

• Ichikawa Yasuaki

  Dept Of Environmental Eng And Architecture Nagoya University

• KAWAMURA Katsuyuki

  Dept of Earth and Planetary Science, Tokyo Institute of Technology

• SUZUKI Satoru

  National Institute of Advanced Industrial Science and Tech

• Kitayama Kazumi

  Nuclear Waste Management Organization Of Japan (numo)

• Kawamura Katsuyuki

  Dept Of Earth And Planetary Science Tokyo Institute Of Technology

関連論文

• Thermal Impact on Geological Disposal of Hull and End Piece Wastes Resulting from High-Burn-up Operation of LWR and Introduction of MOX Fuels into LWR
• LWR High Burn-Up Operation and MOX Introduction ; Fuel Cycle Performance from the Viewpoint of Waste Management
• Micro-structure of Bentonite Clay and Diffusion Coefficient Given by Multiscale Homogenization Analysis
• Burning of MOX fuels in LWRs ; fuel history effects on thermal properties of hull and end piece wastes and the repository performance

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