INVESTIGATION OF FLEXURAL PERFORMANCE OF CONCRETE BEAMS REINFORCED WITH GLASS FIBER REINFORCED POLYMER REBARS
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.
requirements for structural concrete and
commentary (ACI 318-19). Farmington Hills,
MI: American Concrete Institute.
ACI Committee 440. (2015). Guide for the Design
and Construction of structural concrete
reinforced with Fiber Reinforced Polymer
(FRP) bars (ACI 440.1 R-15). Farmington
Hills, MI: American Concrete Institute.
Adam, M. A., Said, M., Mahmoud, A. A., & Shanour,
A. S. (2015). Analytical and experimental
flexural behavior of concrete beams reinforced
with glass fiber reinforced polymers
bars. Construction and Building Materials, 84,
Alsayed, S. H., Al-Salloum, Y. A., & Almusallam, T.
H. (2000). Performance of glass fiber
reinforced plastic bars as a reinforcing
material for concrete structures. Composites
Part B: Engineering, 31(6-7), 555-567. Ashour, A. F. (2006). Flexural and shear capacities of
concrete beams reinforced with GFRP
bars. Construction and Building
Materials, 20(10), 1005-1015.
Bank, L. C. (2006). Composites for construction:
structural design with FRP materials. John
Wiley & Sons.
Barris, C., Torres, L., Turon, A., Baena, M., &
Catalan, A. (2009). An experimental study of
the flexural behaviour of GFRP RC beams and
comparison with prediction
models. Composite Structures, 91(3), 286-295.
Benmokrane, B., Chaallal, O., & Masmoudi, R.
(1995). Glass fibre reinforced plastic (GFRP)
rebars for concrete structures. Construction
and Building Materials, 9(6), 353-364.
Bischoff, P. H. (2005). Reevaluation of deflection
prediction for concrete beams reinforced with
steel and fiber reinforced polymer
bars. Journal of structural engineering, 131(5),
Burgoyne, C. J., Byars, E., Guadagnini, M., Manfredi,
G., Neocleous, K., Pilakoutas, K., ... & Al
Sunna, R. (2007). FRP reinforcement in RC
El Refai, A., Abed, F., & Al-Rahmani, A. (2015).
Structural performance and serviceability of
concrete beams reinforced with hybrid (GFRP
and steel) bars. Construction and Building
Materials, 96, 518-529.
El-Nemr, A., Ahmed, E. A., El-Safty, A., &
Benmokrane, B. (2018). Evaluation of the
flexural strength and serviceability of concrete
beams reinforced with different types of GFRP
bars. Engineering Structures, 173, 606-619.
Emparanza, A. R., Kampmann, R., De Caso, Y., &
Basalo, F. (2018). State-of-the-Practice of
Global Manufacturing of FRP Rebar and
Specifications. Special Publication, 327, 45-1.
Goldston, M., Remennikov, A., & Sheikh, M. N.
(2016). Experimental investigation of the
behaviour of concrete beams reinforced with
GFRP bars under static and impact
loading. Engineering Structures, 113, 220-232.
Kalpana, V. G., & Subramanian, K. (2011). Behavior
of concrete beams reinforced with GFRP
BARS. Journal of reinforced plastics and
composites, 30(23), 1915-1922.
Kassem, C., Farghaly, A. S., & Benmokrane, B.
(2011). Evaluation of flexural behavior and
serviceability performance of concrete beams
reinforced with FRP bars. Journal of
Composites for Construction, 15(5), 682-695.
Tighiouart, B., Benmokrane, B., & Gao, D. (1998).
Investigation of bond in concrete member with
fibre reinforced polymer (FRP)
bars. Construction and building
materials, 12(8), 453-462.
Toutanji, H. A., & Saafi, M. (2000). Flexural behavior
of concrete beams reinforced with glass
fiber-reinforced polymer (GFRP)
bars. Structural Journal, 97(5), 712-719.
Toutanji, H., & Deng, Y. (2003). Deflection and
crack-width prediction of concrete beams
reinforced with glass FRP rods. Construction
and Building Materials, 17(1), 69-74.
Wang, H., & Belarbi, A. (2011). Ductility
characteristics of fiber-reinforced-concrete
beams reinforced with FRP
rebars. Construction and Building
Materials, 25(5), 2391-2401.
It is the policy of the Journal of Duhok University to own the copyright of the technical contributions. It publishes and facilitates the appropriate re-utilize of the published materials by others. Photocopying is permitted with credit and referring to the source for individuals use.
Copyright © 2017. All Rights Reserved.