Swelling characteristics of immersed sand-bentonite mixtures

来源期刊：中南大学学报(英文版)2008年第z2期

论文作者：丰土根 崔红斌 孙德安 杜冰

文章页码：203 - 208

Key words：swelling； bentonite； montmorillonite； swelling pressure； skeleton void ratio

Abstract: A laboratory one-dimensional consolidation apparatus was employed to research the swelling stress and volume of the sand-bentonite mixture under immersed conditions. The stress-strain characteristics of mixtures under varied mixing ratios and loading statuses were analyzed. Based on the results of tests, the mechanism of mixture swelling and collapsing was further discussed. The results show that mixtures with low sand ratios are suitable as hydraulic barrier or containment barriers of general landfills, geological repository and other hydraulic infrastructure works.