FLEXURAL BEHAVIOUR OF UNDER REINFORCED CONCRETE BEAM WITH STEEL BAR AND GFRP BAR AS REINFORCEMENT IN TENSION ZONE WITH M20 AND M25 GRADE OF CONCRETE

Abstract

This paper presents the experimental study of flexural behavior of RCC beams reinforced with glass fiber reinforced polymer (GFRP) bars and steel bars. The glass fiber reinforced polymer has low elasticity and lower stiffness than the steel reinforcement. The use of GFRP bars in reinforced concrete structures has emerged as an alternative to traditional reinforced concrete beam. A total four RCC beams were tested. The size of beam is length of 1.5m, width 0.15m and depth 0.15m (1.5x0.15x0.15) m. Out of four beams, two beams were casted with GFRP bars as reinforcement in tension zone with M20 and M25 grade of concrete and remaining two beams with steel bars as reinforcement in tension zone with M20 and M25 grade of concrete. The RCC beam is tested under two point loading by using universal testing machine with simply supported condition. Experimental results indicates the load deflection curves for the beam specimen’s and crack pattern of the beams.