Mechanical Properties Characterisation of FRPS Under Elevated Temperatures

Abstract

Fiber-reinforced polymers (FRP) are rapidly gaining acceptance from the construction sector due to their large effectiveness. They are mainly used as confining reinforcement for concrete columns and as tensile reinforcement for concrete beams and slabs. FRPs are already used to a large extent at applications such as bridges and parking lots, where elevated temperatures are not the main risk. Their increasing use as structural reinforcement is hampered by the concern related with their behavior at elevated temperatures as the relevant research is deficient. Thanks to the significant advantage of FRPs' mechanical properties, further investigation into the influence of heating on their mechanical behavior may solve many doubts. The present study examines the influence of temperatures of 50, 100 and 250°C on the tensile strength of FRP laminates with carbon fibers (CFRP). In addition, the resistance of CFRP specimens to lowcycle thermal loading at the temperatures of 50, 100 and 250°C under constant tensile load was investigated. The experiments carried out in the laboratory of Experimental Strength of Materials and Structures of