Flexural performance of FRP-strengthened concrete beams: A review

Abstract

Performance of FRP-strengthened beams in flexure is critical most recently in the field of concrete structural engineering over possible improvements of strength, ductility, and durability of concrete structures. This paper critically reviews the recent development in using FRP materials for flexural strengthening of concrete beams, primarily on some experimental results, availability of theoretical models, and practical applications. The present overview covers the effect of critical parameters, including the type of FRP carbon, glass, aramid, etc., bonding techniques, and failure mechanisms, among others, on flexural performance. Desirable properties of FRP materials in flexural strengthening, studies on analytical results considering high modulus-to-weight ratio and corrosion resistance, indicate disadvantages related to delamination, environmental durability, and cost. New trends in FRP data are given on reinforced or hybrid FRP systems. This paper is meant to provide a wide view of FRP strengthened concrete beams so that researchers, engineers, and professionals can get better insights toward smart and useful solutions for strengthening.