Scanning Electron Microscopic Evaluation of Self-Compacting Concrete Spalling at Elevated Temperatures
Mahmoud B. Alhasanat1, Arabi N. Al Qadi1, Omar A. Al Khashman1 & Ahmad Dahamsheh1 Show affiliations
- AlHussien Bin Tala Univ., Jordan
American Journal of Engineering and Applied Sciences, Volume 9, Issue 1, pp. 119–127 · doi.org/10.3844/ajeassp.2016.119.127
Abstract
This paper reports the effect of addition of Polypropylene (PP) fibers in the performance of Self-Compacting Concrete (SCC) under elevated temperatures. Various SCC mixtures were made with PP fiber at 0.0, 0.05, 0.10 and 0.15% by volume added. The specimens were exposed to elevated temperatures (200°C [392°F], 400°C [752°F] and 600°C [1112°F]). The microstructure of the matrix was investigated. This study concluded that the high temperatures have a coarsening effect on the microstructure of SCC with the addition of PP fibers. It was reported that PP fibers reduced explosive spalling of SCC above 0.05% by volume and increased the number of voids in the microstructure significantly.
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Alhasanat, M. B., Al Qadi, A. N., Al Khashman, O. A. & Dahamsheh, A. (2016). Scanning Electron Microscopic Evaluation of Self-Compacting Concrete Spalling at Elevated Temperatures. American Journal of Engineering and Applied Sciences, 9(1), 119–127. https://doi.org/10.3844/ajeassp.2016.119.127
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