Zhao, H., Hanein, T. orcid.org/0000-0002-3009-703X, Li, N. et al. (4 more authors) (2019) Acceleration of M-S-H gel formation through the addition of alkali carbonates. In: Proceedings of the 15th International Congress on the Chemistry of Cement (ICCC 2019). 15th International Congress on the Chemistry of Cement, 16-20 Sep 2019, Prague, Czech Republic.
Abstract
The varied properties of different cements enable the cement industry to shift towards the manufacture of application-specific cements rather than a general-purpose binder. M-S-H cements could offer a good alternative for specialist application, and could potentially have a lower carbon footprint as they require much lower temperatures for their production compared with Portland cement (PC). M-S-H cements harden with M-S-H gel as a binding phase, which is the equivalent of calcium silicate hydrate (C-S-H) gel in PC. However, the development of M-S-H is much slower than that of C-S-H, resulting in insufficient strength development of the product; thus, limiting the applications of M-S-H cement. The present study investigates the effects of an additive to enhance the development of M-S-H gel. Sodium bicarbonate was tested, and its impacts on the evolution of M-S-H gel were studied. The obtained results indicate that sodium bicarbonate has the ability to aid the development of M-S-H by promoting the reaction of Mg(OH)2 and SiO2, which resulted in the accelerated development of M-S-H gel.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 The Authors. For reuse permissions, please contact the author(s) |
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: | 14 Aug 2019 09:21 |
Last Modified: | 06 Oct 2020 10:25 |
Status: | Published online |
Refereed: | Yes |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:149610 |