Using of Glass Fiber Reinforced Polymer Bars as Reinforcement for Reinforced Concrete Beams Exposed to Fire

摘要

In recent years, some attempts have been performed to extend general design rules reported in the codes for steel reinforced concrete to Fiber Reinforced Polymer (FRP) materials; this is the case of relationships adopted in the evaluation of the effect of high degrees of temperature on FRP bars comparison with steel bars. However, such relationships seem to be inappropriate for FRP reinforcing bars: in fact, experimental test results have shown high resistance to tire carbon (C330-10%) bars to change the high temperatures and high outweigh on GFRP compared to steel reinforcement and that bond behavior of C.GFRP (C330-10%) bars is different from that observed in case of deformed GFRP and deformed steel. As a consequence, a new procedure for the evaluation to change the high temperatures based on an analytical approach is needed in order to directly account for the actual values as obtained by experimental tests on mixing different resin types with GFRP reinforcing bars. During this research contribution, an experimental study of C.GFRP (C330-10%) bar as a resistance bar for high degrees of temperature and concrete bond test is carried out and presented to investigate the bond stress behavior for normal concrete, and study feasibility of using glass fiber reinforced polymer bars resistance high degrees of temperature as reinforcement for reinforced concrete beams. The tested specimens included eight concrete beams with 1800mm length, 100mm width and 200mm height.