PSI - Issue 68

Rami Hawileh et al. / Procedia Structural Integrity 68 (2025) 259–265 R. Hawileh et al./ Structural Integrity Procedia 00 (2025) 000–000

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• While the mix with steel fibers alone showed the highest compressive strength at room temperature, the combination of steel and PP fibers provided a better balance between maintaining compressive strength and reducing strength degradation after exposure to high temperatures. Acknowledgements The support presented in this paper had been provided by the American University of Sharjah through the undergraduate research grant CEN-URG-F23-10 and Riad T. Al-Sadek Endowed Chair in Civil Engineering. The support is gratefully acknowledged and appreciated. The views and conclusions expressed or implied are those of the authors and should not be interpreted as those of the donor or the institution. References Alsalman, A., Dang, C. N., Micah Hale, W., 2017. Development of ultra-high performance concrete with locally available materials. Construction and Building Materials , 133 , 135–145. https://doi.org/10.1016/j.conbuildmat.2016.12.040 Assad, M., Hawileh, R., Abdalla, J., 2022. 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