Researches on Mechanical Property of CFRPconcrete Interface at Elevated Temperatures

Abstract:

The shear tests of CFRPConcrete interface specimens were executed at different temperatures,4,40,60,80,100,120,140,160,180 ℃,to investigate the changing regulation of the interface strength with temperature,the failure type and the influence of the temperature on the adhesive and carbon fiber reinforced polymer(CFRP).The relationship between the bond stress and slip was preliminarily established at different temperatures.The test results show that the interface bond strength at 40 ℃ is the maximum,and the interface strength decreases when the temperature is over 40 ℃,and then remains stable when the temperature is over 100 ℃.