Geddes, DA, Ke, X, Bernal, SA et al. (2 more authors) (2017) Metakaolin-Based Geopolymers for Nuclear Waste Encapsulation. In: Martirena, F, Favier, A and Scrivener, K, (eds.) Calcined Clays for Sustainable Concrete. RILEM Bookseries, vol 16. 2nd International Conference on Calcined Clays for Sustainable Concrete, 05-07 Dec 2017, Havana, Cuba. Springer , pp. 183-188. ISBN 978-94-024-1206-2
Abstract
The UK nuclear industry has a significant and challenging stockpile of nuclear wastes, and geopolymers produced from activation of the calcined clay metakaolin offer a valuable alternative to Portland cement-based systems. The characteristics of different formulations of metakaolin-based geopolymers, reacted with sodium and potassium silicate, are therefore of interest. As preliminary steps, the compressive strength and rheology of some metakaolin geopolymer grouts have been studied. This work showed that a potassium silicate-based geopolymer binder, with a sufficiently high water content can be produced to be highly workable. These grouts have a shear stress of approximately 80 Pa at a shear rate of 110 s−1 and can achieve compressive strengths of up to 40 MPa after 7 days of curing. This study is to be expanded in future and compared to the results produced from further analysis performed on the chemical structure of the geopolymer, as well as the overall physical characteristics achieved, to support the immobilisation, incorporation and retention of metal and oil based nuclear wastes.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018, RILEM. This is a post-peer-review, pre-copyedit version of an article published in Calcined Clays for Sustainable Concrete. The final authenticated version is available online at: https://doi.org/10.1007/978-94-024-1207-9_29. Uploaded in accordance with the publisher's self-archiving policy |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 11 Sep 2018 11:27 |
Last Modified: | 28 Oct 2018 00:38 |
Status: | Published |
Publisher: | Springer |
Identification Number: | 10.1007/978-94-024-1207-9_29 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:135508 |