INVESTIGATION OF FLEXURAL PERFORMANCE OF CONCRETE BEAMS REINFORCED WITH GLASS FIBER REINFORCED POLYMER REBARS

  • MUHAMMAD A. MUHAMMAD
  • FARIS R. AHMED
  • SERWAN KH. RAFIQ
Keywords: Concrete Beam; Glass Fiber Reinforced Polymer Rebar; Deflection; Moment Capacity; Four Point Loading Test; ACI 440.1R-15

Abstract

As a solution of steel corrosion, glass fiber reinforced polymer (GFRP) rebars have been recommended
to be used as internal reinforcement instead of steel reinforcement during last two decades. Lightweight,
no-corrosion, thermal conductivity, electrically and magnetically resistance, and higher tensile strength
are main advantageous properties of GFRP rebars over steel reinforcement. However, it has been noted
that the recommended design codes in this field still require modifications. Some studies were conducted
on concrete structures reinforced with this new reinforcing material worldwide. In this paper, test data of
fifty-three concrete beams reinforced with GFRP rebars were collected from eight different works to
investigate cracking moment, nominal moment, deflection and neutral axis depth. The selected beams
were reinforced with steel stirrups and GFRP rebars in traverse and longitudinal directions, respectively.
The beams were tested under four-points loading test to fail in flexure. A comprehensive approach to
calculate both experimental and predicted results is given in terms of deflection and flexural capacity. The
experimental results are compared with calculated design results according to ACI 440.1R-15. Statistical
data analysis is performed for both theoretical and experimental results. In conclusion, the multiplier
factors for theoretical cracking moment, nominal moment, ultimate deflection and neutral axis depth have
been proposed to be 0.94, 1.25, 1.4 and 0.806, respectively.

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Published
2021-01-06
How to Cite
MUHAMMAD, M. A., AHMED, F. R., & RAFIQ, S. K. (2021). INVESTIGATION OF FLEXURAL PERFORMANCE OF CONCRETE BEAMS REINFORCED WITH GLASS FIBER REINFORCED POLYMER REBARS. Journal of Duhok University, 23(2), 630-647. Retrieved from https://journal.uod.ac/index.php/uodjournal/article/view/962