Title:
Shear Resistance of Glass Fiber-Reinforced Polymer-Reinforced Concrete Beams with Short Shear Spans: Literature Review and Research Needs
Author(s):
Ahmed Iraqy, Basil Ibrahim, Mohamed Eladawy, and Brahim Benmokrane
Publication:
Structural Journal
Volume:
123
Issue:
1
Appears on pages(s):
187-200
Keywords:
analytical modeling; concrete beams; design codes; glass fiber-reinforced polymer (GFRP) bars and stirrups; shear resistance; shear span-depth ratio; short shear span; strut-and-tie model (STM); test data
DOI:
10.14359/51749102
Date:
1/1/2026
Abstract:
Corrosion—one of the major threats to the integrity of concrete structures—can consequently affect structure serviceability and ultimate limit state, possibly resulting in failure. Glass fiber-reinforced polymer (GFRP) can be used as an innovative alternative for conventional steel reinforcement in concrete structures, effectively addressing corrosion issues. In addition to its corrosion resistance and high strength-to-weight ratio, GFRP is commonly selected for nonprestressed bars and stirrups due to its cost advantage over other fiber-reinforced polymer (FRP) materials. The study endeavored to provide a comprehensive overview of the shear resistance in GFRP-reinforced concrete (RC) beams with short shear spans. The manuscript aims to synthesize and analyze shear test data based on published studies on GFRP-RC beams with a short shear span (a/d = 1.5 to 2.5). A comprehensive literature review was conducted to compile a database comprising 64 short GFRP-RC beams to evaluate the efficiency of using the strut-and-tie model (STM) for predicting the shear resistance of GFRP-RC beams. The findings reveal that ACI 318-19 STM yielded the most accurate predictions of the shear resistance of GFRP-RC beams with a/d of 1.5 to 2.5, because the current ACI CODE-440.11-22 and ACI 440.1R-15 design codes and guidelines do not include shear equations using the STM for predicting the shear resistance of GFRP-RC beams. Based on the findings of this study, the results could contribute to establishing shear equations in the upcoming revision of the ACI CODE-440.11-22 and ACI 440.1R-15 design codes and guidelines, specifically tailored for designing short GFRP-RC beams using the STM. The study also provides sufficient data to apply the STM in the design of GFRP-RC beams.
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