Abstract
In the present study, accelerated tests of GFRP were carried out in order to clarify the penetration of alkali in GFRP rods. Sections of GFRP rods were observed using an Electron Prove Microscope Analyzer.
From experimental result, it was known that Alkali penetrated into GFRP and corroded glass fibers in the rod. And it was clarified that the deterioration of GFRP accompanied by the decrease in tensile strength is due to the penetration of alkali depending on the glass fibers present in them. The alkali penetration process of model based on Fick's first law. The decrease in tensile strength of GFRP due to alkali could be estimated by the proposed model.
