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Assessment of clay buffers for isolating HLW
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-2845-4536
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-1365-8552
East China University of Technology.
2014 (English)In: Waste Management and The Environment VII / [ed] C.A. Brebbia; G. Passerini; H. Itoh, Southampton: WIT Press, 2014Conference paper, Published paper (Refereed)
Abstract [en]

Great effort is put on finding optimal buffer clays for isolating highly radioactive waste (HLW) in countries utilizing nuclear energy. Different materials are required to provide a hydrologically and mechanically suitable surrounding of canisters with highly radioactive waste in repositories in crystalline rock. For shallow disposal the high hydraulic conductivity of the rock makes very dense smectite-rich clays necessary while for disposal in very deep holes the primary desire is to use smectitic clays with a potential to resist high temperatures. In both cases montmorillonite, with Al being a dominant lattice ion in the octahedral layer, is suitable, but saponite with Mg as dominant octahedral constituent can be preferable for deep disposal. For both concepts use of smectitic mud is an option for supplying the buffer with water from start and for controlling the hydration rate.

Place, publisher, year, edition, pages
Southampton: WIT Press, 2014.
Series
W I T Transactions on Ecology and the Environment, ISSN 1746-448X ; 180
National Category
Geotechnical Engineering
Research subject
Soil Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-32049DOI: 10.2495/WM140351Local ID: 668dbec9-9ca2-43ee-95fc-11aaff5d1a3fISBN: 978-1-84564-760-5 (print)OAI: oai:DiVA.org:ltu-32049DiVA, id: diva2:1005283
Conference
International conference on Waste Management and the Environment : 12/05/2014 - 14/05/2014
Note
Godkänd; 2014; 20140210 (tinyan)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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