ミクロ非均質材料の拡散現象 : 粘土から泥岩へ向けて(<特集>岩石力学)

概要

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Diffusion in clay and mudstone is a peculiar phenomenon because of involved clay minerals. Clay and mudstone are a microinhomogeneous material. In order to understand the true behavior, first we specify the microstructure by a conforcal laser scanning microscope (CLSM) together with SEM, second the material properties of each constituent component are identified by a molecular dynamics simulation (MD), and third the microscale characteristics are related to the macroscale behavior by a multiscale homogenization analysis method (HA). Note that the bentonite generally consists of montmorillonite with the size of about 100nm and chalcedony with the size of about 10∿50μm, so we introduce the multiscale HA with mesoscale and microscale systems. We show diffusion characteristics of tritium water (HTO) in bentonite. The numerical results of this MD/HA procedure are consistent experimental ones.
社団法人日本材料学会の論文
2003-05-15