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The IUP Journal of Structural Engineering :
Experimental and Analytical Investigation of PCC and RCC Beams Strengthened with CFRP and GFRP Laminates by ANSYS
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In the paper, an attempt has been made to know the behavior of plain and reinforced beams strengthened with different FRP laminates such as Carbon Fiber Reinforced Polymers (CFRP) and Glass Fiber Reinforced Polymers (GFRP), to calculate the load required for producing first crack in Reinforced Cement Concrete (RCC) beams and comparing it with experimentally and analytically, to increase the flexural strength of the structural members strengthened with different FRPs and to know the load carrying capacity and deflection of both Plain Cement Concrete (PCC) and RCC beams strengthened with GFRP and CFRP. The test specimens of size 700 mm in length, 150 mm in breadth and 150 mm in depth were cast according to the mix design. The CFRP and GFRP laminates were wrapped at the soffit (tension face) of both plain and RC beams. The results obtained for the load required at first crack was 24.9 kN theoretically, 33 kN experimentally and 39 kN analytically using ANSYS software. By laminating CFRP and GFRP sheets at the soffit of the PCC and RCC beams, the deflections were decreased as compared to only PCC and RCC beams when the flexural load was applied. The analytical and experimental results for PCC and RCC beams wrapped with GFRP and CFRP were compared with each other. The results showed that the PCC and RCC beams wrapped with CFRP at the soffit of the beams gave higher strength and lesser deflection compared to beams wrapped with GFRP.

 
 
The outline of structural building structures relies upon particular plan criteria which represent stresses, design loads and so on. Concrete is recognized to be a moderately brittle material when subjected to ordinary stresses and affect loads, where compressive strength is 10 times more than the tensile strength. As a result of these qualities, concert member could not bolster such loads and stresses that usually occur in the slabs and beams. Also, additionally concrete is poor in ductile property and because of this property, reinforcement bars are used in concrete structures to give adequate strength. An expanding number of strengthened solid structures have achieved the finish of their administration life, either because of decay of concrete and reinforcement caused by natural components and the far-reaching utilization of deicing salts, or due to increment in applied loads. These weakened structures may be basically lacking or practically outdated, and generally in genuine need of broad rehabilitation. Strengthening can be utilized as a cost-effective option to the substitution of these structures and is regularly the main feasible solution. Nowadays, different technologies are used to repair and rehabilitate the existing structures like buildings, bridges and dams, etc. which were constructed earlier and are losing their strength now because the structures are too old and also due to increase in loads.

 
 

Carbon Fiber Reinforced Polymers (CFRP), Glass Fiber Reinforced Polymers (GFRP), Finite element analysis in ANSYS (15.0) software.