Recycling and reuse of reactive MgO cements – A feasibility study

Sonat, C., Lim, C.H., Liska, M. and Unluer, C. (2017) Recycling and reuse of reactive MgO cements – A feasibility study. Construction and Building Materials, 157, pp. 172-181. (doi: 10.1016/j.conbuildmat.2017.09.068)

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This study investigated the recycling potential of carbonated reactive MgO cement (RMC)-based concrete systems. Calcination conditions controlled the performance of recycled samples, which were fully decomposed at 700 °C. Recycled samples demonstrated 15–20% lower strengths than original samples, attributed to changes in MgO reactivity, aggregate properties and interaction between aggregates-cement paste. Robustness of the recycling process was demonstrated via five repetitive calcination cycles applied on a single batch. Successful separation of aggregates from the surrounding cement paste before the recycling process could resolve issues associated with performance and lower the total energy requirement by only subjecting the cement paste to calcination.

Item Type:Articles
Additional Information:The authors would like to acknowledge the financial support from the Singapore MOE Academic Research Fund Tier 1 (RG 113/14) for the completion of this research project.
Glasgow Author(s) Enlighten ID:Unluer, Dr Cise
Authors: Sonat, C., Lim, C.H., Liska, M., and Unluer, C.
College/School:College of Science and Engineering > School of Engineering > Infrastructure and Environment
Journal Name:Construction and Building Materials
ISSN (Online):1879-0526
Published Online:22 September 2017

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