The diffusion coefficients (D) of water and solutes in nanoporous Na-smectite clay barriers
have been widely studied because of their importance in high-level radioactive waste …

The changes in the pore structure of hydrating cement are accompanied by changes in the
dynamics of liquid phases contained in the pore system of the hydrating matrix. Dynamic …

Understanding of the transport properties of porous rocks is important for safe nuclear waste
disposal because harmful contaminated groundwater can migrate along pore spaces over …

X-ray computed tomography, neutron computed tomography, and magnetic resonance
imaging are driving novel scientific advances by enabling rapid, non-destructive, three …

Cs migration in soils at contaminated sites or in clay-rich backfill of waste disposal sites can
take place under partially saturated conditions. To understand the molecular mechanism of …

Clays and clay rocks are considered good natural and engineered barriers for deep
geological disposal of nuclear waste worldwide. Metal corrosion and organic waste …

The diffusion pathways of porous sandstone were examined by a three-dimensional (3-D)
imaging technique based on X-ray computed tomography (CT) using the SPring-8 (Super …

The transport properties (porosity, surface‐to‐volume ratio of the pore space, diffusion
coefficient, and permeability) of a porous medium were calculated by image analysis and …

Bentonite clay is proposed as backfill or buffer materials in the engineered barrier system for
high-level nuclear waste (HLW) disposal in a deep geological repository (DGR). The major …

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 …