Supplementary Files
Keywords
Bond retention
Bond stress
Alkali exposure
Free end slip
Failure modes
How to Cite
Abstract
India’s vast coastline makes marine infrastructure highly vulnerable to corrosion of steel reinforcement, leading to major economic burdens like the U.S., where corrosion-related costs reach $558 billion annually. Glass Fibre-Reinforced Polymer (GFRP) bars provide an excellent alternative to steel to eliminate corrosion related issues. However, the durability of GFRP bars in concrete’s highly alkaline environment remains a concern. This study evaluates the effects of alkaline exposure on the bond performance of 8, 10, and 12 mm GFRP bars. Pullout specimens were cast and immersed in simulated alkaline solution for a duration of 90 and 180 days. Pullout tests conducted after 90 and 180 days revealed minimal bond deterioration at 90 days, while a 3–4% reduction was observed after 180 days compared to control specimens. The findings offer significant contribution in developing design models to predict service life of GFRP bars in alkaline environment.
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