Fiber-reinforced reactive magnesia-based tensile strain-hardening composites

Ruan, S., Qiu, J., Yang, E.-H. and Unluer, C. (2018) Fiber-reinforced reactive magnesia-based tensile strain-hardening composites. Cement and Concrete Composites, 89, pp. 52-61. (doi: 10.1016/j.cemconcomp.2018.03.002)

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This study focuses on the development of a new strain-hardening composite (SHC) involving carbonated reactive MgO cement (RMC) and fly ash (FA) as the main binder. Rheological properties of the developed composites were investigated by varying FA and water contents to achieve desirable fiber dispersion. A suitable mix design, in which polyvinyl alcohol (PVA) fibers were introduced to provide tensile ductility, was determined. The effect of key parameters such as w/b ratio and curing age on the mechanical properties of carbonated RMC-SHC was evaluated. Adequate binder content and w/b ratio was necessary for desirable fiber dispersion. Lower water contents and longer curing ages contributed to the strength development of RMC-SHC by improving the fiber-matrix interface bond and enhancing the formation of a dense carbonate network.

Item Type:Articles
Additional Information:The authors would like to acknowledge the financial support from the Singapore MOE Academic Research Fund Tier 1 (RG 95/16) for the completion of this research project.
Glasgow Author(s) Enlighten ID:Unluer, Dr Cise
Authors: Ruan, S., Qiu, J., Yang, E.-H., and Unluer, C.
College/School:College of Science and Engineering > School of Engineering > Infrastructure and Environment
Journal Name:Cement and Concrete Composites
ISSN (Online):1873-393X
Published Online:06 March 2018

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