Influence of sustained stress on the durability of glass FRP reinforcing bars

In this paper, the effect of sustained stress on GFRP bars exposed to different environmental conditions, namely air, alkaline environments, deionized water, and salt solutions, is studied by analyzing a database comprising 127 GFRP bar tensile tests collected from the literature. The results are analyzed and discussed to investigate the effect of sustained stress on the tensile strength of GFRP bars and to calibrate characteristic and design values for tensile strength long-term reduction factors.