Evaluation of the performance of slurry infiltrated fibre concrete slabs exposed to hydrocarbon fire

The current work investigates the impact of the scenario, duration, and type of fire load on the behaviour of normal strength concrete (NSC) and slurry infiltrated fibre concrete (SIFCON) slabs. Four groups were moulded and tested before and after exposure to high temperatures. All 800 × 800 × 40 mm slabs were exposed to two types of loads until failure at the age of 56 days before and after being exposed to high temperatures of 927°C and 1,010°C, after 60 and 120 min, respectively. The slabs were exposed to fire from the upper side, lower side, and edges. It was observed that the SIFCON slabs have higher efficient compared to NSC slabs, as the proportions of the residual load-bearing capability of burned SIFCON are greater than those of NSC. The punching and uniform strength resistance decreased by 31.7%-39% and 34%-50.5%, respectively, for SIFCON slabs and 47.7% and 52.8%, respectively, for NSC slabs.