Structural Behavior of BFRCC Layered Deep Beams Reinforced with GFRP Headed-End Bars

Bediwy A., Mahmoud K., El-Salakawy E.

10th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering (CICE), İstanbul, Turkey, 8 - 10 December 2021, vol.198, pp.335-341 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 198
  • Doi Number: 10.1007/978-3-030-88166-5_28
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.335-341
  • Keywords: Deep beams, Basalt fiber pellets, Glass fiber-reinforced polymers (GFRP), Headed-end bars, Nano-silica, STRENGTH, WEB
  • Istanbul Technical University Affiliated: No


In North America, structures in aggressive environments such as bridges and parking structures are prime examples for the use of fiber-reinforced composites (FRCs) due to their capability to control shrinkage cracking and improve impact resistance. Also, after cracking, more advantages of FRCs were reported such as increased energy-absorbing capacity and deformation capability, and improved load-bearing capacity. Reinforced concrete (RC) deep beams are one of the common components in such structures. Deep beams have higher load capacity compared to slender beams. They are characterized by their small span-to-depth ratio and they are usually designed using the Strut-and-Tie Model (STM). Recently, fiber-reinforced polymer (FRP) bars have been used as an alternative to steel bars to overcome the corrosion problems. However, due to its linear-elastic behavior and relatively low modulus of elasticity compared to steel, glass FRP (GFRP)-RC deep beams would be susceptible to deeper and wider cracks as well as lack of ability to redistribute stresses, which will adversely affect the capacity of such beams. On the other hand, contribution of the arch action mechanism to the shear strength in FRP-RC deep beams can be improved because of the relatively higher tensile strength of FRP bars in the tie.