Enhancement of flexural strength on reinforced concrete beams strengthened with GFRP under cyclic loading.

Sandeep G. Sawant

Abstract


This paper presents experimental research on reinforced concrete beams with flexural strengthening by Glass fiber reinforced polymer (GFRP) under cyclic loading. A total of 54 beams were cast and externally bonded with different configurations and three beams were cast without Strengthening (control beam). Each beam was tested under reversed cyclic loading under a two-point loading system. The loads are applied as positive and negative loads. The test specimens were evaluated in terms of load-displacement and cracking patterns. The experimental results show that strengthened RC beam load carrying capacity is observed to be in the range of 0 % to 25% for forwarding loading (Positive load) and 23.33 % to 66.66% for reverse loading (Negative load). Deflection is increased in the range 5.34% to 98.96% for forward loading (Positive load) and 0 % to 123.56% for reverse loading (Negative load) as compared to the control beam. 

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