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Degradation Mechanisms in Smectitic Clay for Isolating Radioactive Waste
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-6851-4839
Greifswald University, Greifswald, Germany.
VNU University of Science, Vietnam National University, Hanoi, Vietnam .
2019 (English)In: Journal of Earth Sciences and Geotechnical Engineering, ISSN 1792-9040, E-ISSN 1792-9660, Vol. 9, no 3, p. 115-130Article in journal (Refereed) Published
Abstract [en]

Most of the proposed techniques for chemical shielding of radioactive waste implies use 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 the unavoidable long-term degradation process must be understood and accounted for as described in the paper. In addition to conversion of smectite to non-expandable minerals cementation by precipitation of siliceous matter created in the degradation process is of concern since it can reduce the self-sealing capacity of desiccated or mechanically damaged clay.

Place, publisher, year, edition, pages
UK: Scientific Press International Limited , 2019. Vol. 9, no 3, p. 115-130
Keywords [en]
Smectite clays, diffractogram, radioactive wastes, montmorillonite, XRD, TEM, Holmehus clay
National Category
Engineering and Technology Geotechnical Engineering
Research subject
Soil Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-75708OAI: oai:DiVA.org:ltu-75708DiVA, id: diva2:1346220
Note

Validerad;2019;Nivå 1;2019-09-02 (johcin)

Available from: 2019-08-27 Created: 2019-08-27 Last updated: 2019-09-02Bibliographically approved

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