Performance on Flexural Behavior of Structural Member & It's Retrofitting

The purpose of this experimental work is to study investigate and formulate the behavior of reinforced concrete beams before and after retrofitting by Glass Fiber and Carbon Fiber to increase the strength of deteriorated beams. The investigations were carried out on flexural behavior of concrete beams with concrete grade M15, M25 & M35. The Fifteen nos. of Reinforced Concrete (RC) beams were casted (10 Beams of each grade) of size 150 X 150 X 700 mm. Two materials used for rehabilitation of beams i.e. Glass Fiber and Carbon Fiber, were initially stressed to 60% & 90% of ultimate strength of Control Beam. The experimental results indicated that the rehabilitation technique of RC beams by using Glass Fiber and Carbon Fiber will increase the ultimate strength of beams to order of 30% and 25% respectively. The average increase in strength of beam by Glass Fiber is more than that of Carbon Fiber. The deflection considerably increases after retrofitting by Glass Fiber is 21% and 18% at 60% and 90% stressed levels respectively and by Carbon Fiber it increases 17% and 15% of respective stressed level. Hence we noted that the load carrying capacity of RC beams by using Glass Fiber is considerably more than Carbon Fiber.