Authors : Ameer Saleem Mohammed Al-Obaidi and Abd Alridah Saleh Al-Fatlawi
Abstract: Precast/prestressed Hollow-Core Slabs (HCSS) are often utilized in construction applications because of the many benefits they offer compared with traditional techniques of slab construction. In this study, an experimental investigation about fire damage on precast/prestressed (HCSS) was performed. Five full-scale slabs made from Normal Strength Concrete (NSC) were presented in this study, one of them as a reference slab (control slab) which is not exposed to fire and the other four were exposed to fire according to the standard fire curve (ASTM-E119) with differing exposure durations and variable cooling methods. After burning processes, these slabs tested as simply supported under two line-load at equal distances between these loads and supports, to the stage of failure. The test results appeared that the initial stiffness, the ultimate load carrying capacity and the ultimate vertical deflection for all slabs decreases with increasing the duration of fire exposure. In addition, the slab that cooled suddenly by water after burning appeared slight decrease in these values compared with the slab that left to cooled, gradually in the air.
Ameer Saleem Mohammed Al-Obaidi and Abd Alridah Saleh Al-Fatlawi, 2020. Experimental Investigation of Fire Damage on Precast/Prestressed Hollow-Core Concrete Slabs. Journal of Engineering and Applied Sciences, 15: 2348-2356.