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Title: Open Issues on the Structural Performances of Concrete Beams Reinforced with FRP (Fiber Reinforced Polymers) Rebars

Author(s): Maria Antonietta Aiello and Luciano Ombres

Publication: Symposium Paper

Volume: 360


Appears on pages(s): 369-382

Keywords: Concrete, FRP bars, beams, serviceability, deformability

DOI: 10.14359/51740636

Date: 3/1/2024

The issues related to deformability, strength and ductility of concrete elements reinforced with FRP (Fiber Reinforced Polymer) bars are critically analyzed and discussed in this paper. The analysis is conducted from an experimental point of view by means of bending tests on concrete beams reinforced with Carbon FRP (CFRP) bars with different amounts of reinforcement, and by an analytical approach aiming to evaluate the deflection and cracking phenomenon (number and width of cracks). The experimental results are compared with the analytical predictions and with predictions developed on the basis of the available codes (ACI, EC2, JSCE). The analysis of the results obtained confirms the most relevant issues of the mechanical behavior of FRP bar-reinforced beams, still worthy of research efforts; some technological and construction solutions that can provide significant improvements are also addressed.