This paper presents the results of an experimental study on the thermal effects on glass fibre reinforced polymer （GFRP） bars embedded in concrete. The pullout test specimens were subjected to temperatures of 40℃,...This paper presents the results of an experimental study on the thermal effects on glass fibre reinforced polymer （GFRP） bars embedded in concrete. The pullout test specimens were subjected to temperatures of 40℃, 60℃ and 80℃ during a continuous four months-period of time. The results were compared to the reference specimens （room temperature）. It was found that up to 60℃, the loss in bond strength due to the temperature is not significant, whereas for the 80℃-temperature a reduction of 14% in the bond strength is observed. Also, the bond-slip relationship was modelled using the CMR-model and new coefficients are proposed for the bond-slip behaviour of GFRP bars.展开更多
文摘This paper presents the results of an experimental study on the thermal effects on glass fibre reinforced polymer （GFRP） bars embedded in concrete. The pullout test specimens were subjected to temperatures of 40℃, 60℃ and 80℃ during a continuous four months-period of time. The results were compared to the reference specimens （room temperature）. It was found that up to 60℃, the loss in bond strength due to the temperature is not significant, whereas for the 80℃-temperature a reduction of 14% in the bond strength is observed. Also, the bond-slip relationship was modelled using the CMR-model and new coefficients are proposed for the bond-slip behaviour of GFRP bars.
