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Abstract

In the present study, the effect of fiber orientation and stress level on the strength of stressed beams retrofitted with GFRP jackets is studied. The beams were initially stressed up to 60, 75, and 90% of their safe load and then retrofitted with GFRP jackets with fibers in different orientations. The results show that the beams retrofitted using GFRP jackets with fibers at 45° to the longitudinal axis yield a higher increase in the maximum load carrying capacity, i.e., approximately 30—35% in case of under-reinforced sections and 13—17% in case of balanced sections as compared to beams retrofitted using fibers at 0° to the longitudinal axis. A considerable increase in the ductility ratio is also observed for both the fiber orientations.

Keywords

retrofitting jackets GFRP beams reinforced concrete orientation.

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References

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Experimental Study on Retrofitting of Stressed RC Beams using GFRP Jackets

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