Ke, X., Bernal, S.A., Ye, N. et al. (2 more authors) (2015) One-part geopolymers based on thermally treated red Mud/NaOH blends. Journal of the American Ceramic Society, 98 (1). 5 - 11. ISSN 0002-7820
Abstract
In this study, one-part "just add water" geopolymer binders are synthesized through the alkali-thermal activation of the red mud which is relatively rich in both alumina and calcium. Calcination of the red mud with sodium hydroxide pellets at 800C leads to decomposition of the original silicate and aluminosilicate phases present in the red mud, which promotes the formation of new compounds with hydraulic character, including a partially ordered peralkaline aluminosilicate phase and the calcium-rich phases C3A and α-C2S. The hydration of the "one-part geopolymer" leads to the formation of zeolites and a disordered binder gel as the main reaction products, and the consequent development of compressive strengths of up to 10 MPa after 7 d of curing. These results demonstrate that red mud is an effective precursor to produce one-part geopolymer binders, via thermal and alkali-activation processes.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2014 Wiley. This is an author produced version of a paper subsequently published in Journal of the American Ceramic Society. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 02 Jun 2015 15:18 |
Last Modified: | 16 Nov 2016 16:15 |
Published Version: | http://dx.doi.org/10.1111/jace.13231 |
Status: | Published |
Publisher: | Wiley |
Refereed: | No |
Identification Number: | 10.1111/jace.13231 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:86412 |