Abstract
Abstract The present study focuses on studying the load carrying capacity of short reinforced concrete rectangular axially loaded columns with rounded edges strengthened using Glass Fiber Reinforced Polymer (GFRP) bi-directional fabric strips glued with epoxy resin. Columns are wrapped with GFRP in the form of strips of different sizes. The area/material of GFRP wrapped in all patterns for each aspect ratio is the same. The number of FRP layers is varied. Different column sizes with the same cross sectional area and length are considered with aspect ratios 0.5, 0.6, 0.72, 0.84 and 1. Experimental results indicate a significant increase in load carrying capacity of RC rectangular column when strengthened by wrapping GFRP fabric with epoxy resin as glue. Wrapping with 83.3mm strips gave good results than 50mm strips. As number of layers increases load carrying capacity increases up to two layers only, sticking of three layers showed decrease in load carrying capacity. The GFRP strengthening is more effective when the aspect ratio is less.
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