ベントナイトにおけるイオンの拡散の遅滞性に関する実験的検討およびメカニズムの究明

研究了盐溶液在压实膨润土中的渗透行为，为了解高放废物处置缓冲材料中离子的扩散过程提供了理论依据。采用5种浓度的NaCl和KCl溶液对不同压实干密度的膨润土进行24 h的渗透试验。结果表明，随着溶液浓度的增加，膨润土样品中的阳离子扩散量增加。孔隙水中的阳离子浓度与外界供给的阳离子浓度不同。

The infiltration behaviors of salt solutions in the compacted bentonite are being studied, which help to understand the ions diffusion process in the buffer material for the high level radioactive waste disposal. In this study, NaCl and KCl solutions with 5 concentrations was used to infultrate into the compacted bentonite with different compaction dry density for 24 hours. It was found that as the increase in the concentration of the solution, as expected more cations idiffuse into the bentonite specimen. It was also found that the cation concentration in the pore water is not the same as that supplied outside.