Indexed by:会议论文

First Author:Hu, Pan

Co-author:Yang, Qing,Luan, Maotian

Date of Publication:2010-01-01

Included Journals:CPCI-S

Document Type:A

Page Number:853-858

Key Words:bentonite-sand mixtures; soil-water characteristic curve(SWCC); high-level radioactive waste; vapor phase method; osmotic technique

Abstract:The soil-water characteristic curve(SWCC) is a widely used experimental means for assessing fundamental properties of unsaturated soils for a wide range of soil suction values. The study of SWCC is helpful because some properties of unsaturated soils can be predicted from it. Nowadays,much attention has been paid to the behaviours of highly compacted bentonite-sand mixtures used in engineering barriers for high level radioactive nuclear waste disposal. It is very important to study the various performances of bentonite-sand mixtures in order to insure the safety of high-level radioactive waste (HLW) repository. After an introduction to vapor phase method and osmotic technique, a laboratory study has been carried out on compacted bentonite-sand mixtures. The SWCC of bentonite-sand mixtures has been obtained and analyzed. The results show that the vapor phase method and osmotic technique is suitable to the unsaturated soils with high and low suction.

Translation or Not:no