Adu-Amankwah, S, Black, L orcid.org/0000-0001-8531-4989, Skocek, J et al. (1 more author) (2016) Effect of cyclic freezing and thawing on the microstructure of composite cements. In: 36th Cement and Concrete Science Conference. 36th Annual Cement and Concrete Science Conference, 05-06 Sep 2016, Cardiff, UK. Institute of Materials, Minerals and Mining
Abstract
Mixed performance of composite cements exposed to freeze-thaw has been reported. A detailed understanding of the degradation mechanism is also lacking. This study investigates the microstructure of composite slag cements with and without limestone subjected to cyclic freezing and thawing. Freeze-thaw was assessed on concrete samples in accordance with CEN/TR 15177 but with a modified temperature profile. Microstructure was characterized by SEM and thermogravimetric analysis. The results indicate decalcification through carbonation and then leaching as dominant degradation mechanisms. This has implications on the pore structure and hence the water suction capacity and progression of the ice-front in concrete.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Keywords: | concrete; durability; freeze-thaw; microstructure; cement; ternary cement; slag |
Dates: |
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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) > Institute for Resilient Infrastructure (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 14 Aug 2017 11:09 |
Last Modified: | 20 Jan 2018 22:06 |
Status: | Published |
Publisher: | Institute of Materials, Minerals and Mining |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:120074 |