文章基本信息

标题：Degradation Mechanisms in Smectitic Clay for Isolating Radioactive Waste
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作者：Roland Pusch ; Jörn Kasbohm ; Thao Hoang-Minh 等
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.
关键词：Smectite clays; diffractogram; radioactive wastes; montmorillonite;XRD; TEM; Holmehus clay.