Flexural behavior of HSC beams reinforced by hybrid GFRP bars with steel wires

This study offers the flexural performance of HSC beams of 60 MPa compressive strength with locally manufactured hybrid-GFRP (HGFRP) bars with steel wires in experimental and analytical manners. Both investigations were done to explore the influence of using HGFRP bars with various reinforcement ratios for these beams as a new ductile hybrid reinforcement. So, six beams of dimension 150X300X1700 mm were tested in the National Building Research Center-Cairo, Egypt till failure. The main variables were the reinforcement types (steel, GFRP, Hybrid GFRP). The ultimate loads, mid-span deflections, and reinforcement bars strains of the tested beams were documented. Nonlinear analysis was assembled to validate the flexural performance of beams using ANSYS program, in terms of ultimate load, stains, crack pattern and load deflection curves. Numerical investigations good agreement with experimental ones in terms of ultimate loads and deflections, cracking patterns, and the behavior of load deflection.

Automated summary

This study presents experimental and analytical investigations on the flexural performance of high-strength concrete beams reinforced with locally manufactured hybrid-GFRP bars. The results show that the use of hybrid-GFRP bars significantly affects the ultimate load, deflection, and crack pattern of the beams.