Finite element simulation of RC beams under flexure strengthened with different layouts of externally bonded fiber reinforced polymer (FRP) sheets

Authors

  • Muhammad Umair Saleem
  • Nauman Khurram
  • Mohammad Nasir Amin,
  • Kaffayatullah Khan

DOI:

https://doi.org/10.7764/DLC.17.3.383

Keywords:

Fiber Reinforced Polymer, Strengthening, Finite element modelling, Flexural behavior, Numerical simulation

Abstract

Current research work is aimed to numerically simulate the failure behavior of Fiber Reinforced Polymer (FRP) strengthened reinforced concrete beams having different FRP reinforcement ratios. Required objectives are achieved by performing a series of bending tests on RC beams carrying different FRP layout and FRP reinforcement ratio. Tested beams were numerically simulated by using a Finite Element Method based computer package. The layouts of the FRP strengthening were decided based upon the FRP reinforcement ratios ranging from fully wrapped beams to the beams having significantly lower FRP reinforcement ratios. Tests results are presented in the form of load-deflection curves for all of the beams and a comparison of different beam strengthening schemes is also presented. Failure patterns of RC beams strengthened with different layouts of externally bonded FRP sheets were also compared. Results of flexural tests on twelve beams specimens and numerical simulation have indicated that CFRP and GFRP can significantly increase the bending and shear strength of retrofitted beams. However, the use of higher FRP reinforcement ratios to get higher strength increment is not advisable as epoxy properties and concrete surface quality plays a vital role to increase flexural and shear strength.

Author Biographies

Muhammad Umair Saleem

College of Engineering, Department of Civil and Environmental Engineering, King Faisal University
31982, Al-ahsa (Saudi Arabia)

Nauman Khurram

Department of Civil Engineering, University of Engineering and Technology Lahore, P.O. Box 54890, G.T. Road Baghbanpura, Lahore (Pakistan)

Mohammad Nasir Amin,

College of Engineering, Department of Civil and Environmental Engineering, King Faisal University
31982, Al-ahsa (Saudi Arabia)

Kaffayatullah Khan

College of Engineering, Department of Civil and Environmental Engineering, King Faisal University
31982, Al-ahsa (Saudi Arabia)

Downloads

Published

2019-08-05

How to Cite

Saleem, M. U., Khurram, N., Amin, M. N., & Khan, K. (2019). Finite element simulation of RC beams under flexure strengthened with different layouts of externally bonded fiber reinforced polymer (FRP) sheets. Revista De La Construcción. Journal of Construction, 17(3), 383–400. https://doi.org/10.7764/DLC.17.3.383