Durability of GFRP Reinforcing Bars Embedded in Moist Concrete

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Combined effects of saline solution and moist concrete on long-term durability of GFRP reinforcing bars (2013, background): “[2] showed that the predicted time to reach a PR of 90% and 75% for the same GFRP bars embedded in concrete and immersed in tap water at an isotherm temperature of 6 C was approximately 1 and 210 years, respectively.”
Behavior of GFRP Reinforcing Bars Subjected to Extreme Temperatures (2010, background): “Thus, for unidirectional FRPs such as those used predominantly in infrastructure applications, the matrix-dominated properties such as shear and bond strength are expected to be drastically reduced near Tg, which is typically between 100 and 120°C for vinylester matrix systems Robert et al. 2009 .”
Laboratory assessment and durability performance of vinyl-ester, polyester, and epoxy glass-FRP bars for concrete structures (2017, methodology): “(2009) reported that the degradation reaction rate increased almost linearly between room temperature and 50°C, whereas the increase was exponential at higher temperatures (over 60°C).”
Physical and mechanical characteristics of new basalt-FRP bars for reinforcing concrete structures (2015, background): “[35] reported that the increase in degradation reaction rate was almost linear between room temperature and 50 C, whereas, at higher temperatures (over 60 C), the increase in the degradation reaction rate was exponential.”