ABSTRACT
In real service, GFRP bars bear load necessarily. Under load effect, their microcracking ion channel broadens, which causes more ions to immerse the bar material, producing corrosive effect and accelerating bar corrosion. So far, many experiments have been performed under no load condition and just a few under small load condition. Apparently, those experiments cannot accurately simulate the real service of GFRP bars. Ahmed S. Debaiky and others (Debaiky et al. 2006) have obtained its durability performance under load effect by applying load to GFRP bars in high-temperature, water, and alkaline solution environment and making it have 30% ultimate tensile strength. Gang Wu and others (Wu et al. 2015) have studied the durability performance of basalt FRP (BFRP) bars under 20% and 40% ultimate load. Compared with the condition of no load, it is found that durability of bar material is distinctly declined under 40% or more load. To study the long-term durability performance of GFRP bars in real service, experimental study is carried out on durability of GFRP bars under 3 different load conditions, and in two corrosive environments of alkali and sea-water saline solution.
