Sequestration of CO 2 in reactive MgO cement-based mixes with enhanced hydration mechanisms

Dung, N.T. and Unluer, C. (2017) Sequestration of CO 2 in reactive MgO cement-based mixes with enhanced hydration mechanisms. Construction and Building Materials, 143, pp. 71-82. (doi: 10.1016/j.conbuildmat.2017.03.038)

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Strength development of reactive MgO cement-based concrete is limited by the low hydration and carbonation of MgO. This study aims to improve the hydration and mechanical performance of carbonated MgO mixes with the introduction of various hydration agents (HAs) at different concentrations. Influence of these HAs on the hydration and carbonation mechanisms under ambient and accelerated curing conditions was evaluated through isothermal calorimetry, TG, XRD and FTIR analyses. Introduction of HAs enabled extensive carbonation and strength development reaching up to ∼60 MPa at 28 days, which was 107% and 53% higher than the corresponding MgO and PC-based control mixes, respectively.

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: Dung, N.T., 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 March 2017

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