Thermodynamic Response of Crystalline Swelling and Double-Layer Swelling of Compacted Bentonite

被引：0

作者：

Chen, Yonggui ^{[1
]}

Liu, Lina ^{[1
]}

机构：

[1] Tongji Univ, Key Lab Geotech & Underground Engn, Minist Educ, Dept Geotech Engn, Shanghai 200092, Peoples R China

来源：

PROCEEDINGS OF GEOSHANGHAI 2018 INTERNATIONAL CONFERENCE: MULTI-PHYSICS PROCESSES IN SOIL MECHANICS AND ADVANCES IN GEOTECHNICAL TESTING | 2018年

关键词：

Compacted bentonite; Crystalline swelling; Double-layer swelling; Swelling pressure; Swelling strain; HYDRO-MECHANICAL BEHAVIOR; HYDROMECHANICAL BEHAVIOR; AQUEOUS-SOLUTIONS; VOLUME CHANGES; TEMPERATURE; PRESSURE; STRENGTH; WATER; PERTURBATION; STABILITY;

D O I：

10.1007/978-981-13-0095-0_15

中图分类号：

学科分类号：

摘要：

Strong thermodynamic disequilibrium existed in HLW repository site often deteriorates the hydration swelling capacity of compacted bentonite, including the crystalline swelling and the double-layer swelling. In order to investigate the temperature effect on the crystalline swelling capacity and the double-layer swelling capacity, four swelling pressure tests and four swelling strain tests were conducted on compacted Gaomiaozi (GMZ) bentonite specimens saturated with de-ionized water under the temperature of 20 degrees C to 80 degrees C. Main observations show that the crystalline swelling capacity and the double-layer swelling capacity generally decrease with the temperature increases; whereas the crystalline swelling pressure and the double-layer swelling strain present a slight increase tendency under higher temperatures, especially the temperature 60 degrees C and 80 degrees C.

引用

页码：129 / 138

页数：10

共 42 条

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