Scanning Electron Microscopic Evaluation of Self-Compacting Concrete Spalling at Elevated Temperatures

Mahmoud B. Alhasanat, Arabi N. Al Qadi, Omar A. Al Khashman, Ahmad Dahamsheh
2016 American Journal of Engineering and Applied Sciences  
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
more » ... crostructure 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.
doi:10.3844/ajeassp.2016.119.127 fatcat:s6py4m6jnzfnhe334pddcdq344