期刊名称：Journal of Earth Sciences and Geotechnical Engineering
印刷版ISSN：1792-9040
出版年度：2019
卷号：9
期号：3
页码：117-132
语种：English
出版社：Scienpress Ltd
摘要：Most of the proposed techniques for chemical shielding of radioactive waste impliesuse of smectite clay, which degrades according to a well-known scheme. Since such“buffer” clay has to serve for many thousands of years, the mechanisms in theunavoidable long-term degradation process must be understood and accounted foras described in the paper. In addition to conversion of smectite to non-expandableminerals cementation by precipitation of siliceous matter created in the degradationprocess is of concern since it can reduce the self-sealing capacity of desiccated ormechanically damaged clay.
