Flexural Strength of GFRP-Reinforced Concrete Slab after Fire Exposure

Abstract

This research presents a study that aims to investigate the flexural behavior of concrete slabs reinforced with glass fiber reinforced polymer bars (GFRP bar) after being exposed to fire. The research focuses on one-way reinforced concrete slabs with dimensions of 900 mm. width, 3300 mm. length, and 20 mm. thickness. Four concrete specimens were tested, divided into two groups: the control group tested at room temperature and the test group exposed to simulated fire conditions and allowed to cool down for 24 hours. The study aims to determine the flexural strength, deflection, mode of failure, and crack pattern of the slab specimens. Furthermore, the research examines the effect of concrete covering length on the behavior of the concrete slabs, with two concrete covering distances of 20 mm and 40 mm.