Experimental and Analytical Investigation of PCC and RCC Beams Strengthened with CFRP and GFRP Laminates by ANSYS
The IUP Journal of Structural Engineering, Vol. XI, No. 1, January 2018, pp. 26-40
Posted: 10 Aug 2018
Date Written: January 31, 2018
Abstract
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.
Keywords: Carbon Fiber Reinforced Polymers (CFRP), Glass Fiber Reinforced Polymers (GFRP), Finite element analysis in ANSYS (15.0) software
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