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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.ORCID iD: 0000-0002-8956-611X
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, p. 29-34Article in journal (Refereed) Published
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Text
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, p. 29-34
Keywords [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: 000369190800003Scopus ID: 2-s2.0-84954093714OAI: oai:DiVA.org:kth-183186DiVA, id: diva2:908946
Note

QC 20160303

QC 20191021

Available from: 2016-03-03 Created: 2016-03-03 Last updated: 2019-10-21Bibliographically approved

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