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Filtration of silica particles from a low-pH cementitious grout
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Concrete Structures.
2016 (English)In: Construction and Building Materials, ISSN 0950-0618, E-ISSN 1879-0526, Vol. 105, 29-34 p.Article in journal (Refereed) PublishedText
Abstract [en]

Spent nuclear fuel is stored in rock depositories. Swelled bentonite around the stored capsules prevents eventual spread of radioactive material by ground water. The pH-value of the ground water in contact with bentonite shall be less than 11 not to affect the swelling capacity of the bentonite. Therefore cementitious grout with low pH-value is used to grout these depositories. There is a risk that pH-value of this grout can locally increase due to filtration at fracture constriction and influence pH-value of ground water. Chemical SEM EDAX-analysis indicates that there is no risk of increasing of PH-value in this grout.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 105, 29-34 p.
Keyword [en]
Filtration, Low-pH cementitious grouts, Silica fume, Spent nuclear fuel, SEM-EDAX, Chemical analysis
National Category
Civil Engineering
Identifiers
URN: urn:nbn:se:kth:diva-183186DOI: 10.1016/j.conbuildmat.2015.12.054ISI: 000369190800003ScopusID: 2-s2.0-84954093714OAI: oai:DiVA.org:kth-183186DiVA: diva2:908946
Note

QC 20160303

Available from: 2016-03-03 Created: 2016-03-03 Last updated: 2016-03-03Bibliographically approved

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Draganovic, AlmirLagerblad, Björn
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