Flexural behaviour of fire damaged reinforced concrete beam

Abstract

The aim of this study is to investigate the flexural behaviour of fire damaged reinforced concrete beam. The flexural behaviours considered were flexural strength, ductility, toughness and stiffness. All twelve beam samples were designed according to Eurocode 2 with 15 kN/m and 10 kN/m as permanent and variable load respectively. Then, three samples were heated up to 200⁰C, 400⁰C, and 600⁰C for two (2) hours. The remaining three samples were left at ambient temperature as control samples. After undergone heating process, all samples were cooled down to room temperature before flexural tests were performed. Besides, this study also assesses the compressive strength and the concrete quality using Ultrasonic Pulse Velocity (UPV) test at the different pointed temperature. This study found that the heat temperatures significantly affect the compressive and the quality of the concrete as well as the flexural behaviour of reinforced concrete beam.