Experimental Investigation of the Flexural Performance of Hybrid Carbon and Steel Reinforced Concrete Beams

Abstract

Corrosion of steel reinforcing bars is a major factor in concrete structures' failure to endure prolonged exposure to weather. In concrete constructions, fiber-reinforced polymer (FRP) reinforcement has replaced steel reinforcement as a viable solution to this issue. One disadvantage of CFRP is its brittleness and expensive cost. The main goal of this project is to design a viable hybrid FRP bar for concrete structures, notably marine and port concrete construction. Because CFRP bars with adequate tensile strength may be improved by hybridization, the elastic modulus and flexibility of CFRP bars can be increased, and corrosion protection can be improved. The development of CFRP crust with steel core bar and CFRP crust with steel core bar is being evaluated as forms of hybrid FRP bar. Because of hybridization with other materials, this study found an increase in the elastic modulus and stiffness of the hybrid GFRP bar. Produced utilizing local raw materials and a two-part die mold, the bars are locally sourced. For the flexural limit states of sixteen beams with dimensions of 200 mm in width by 350 mm in thickness by 2000 mm in length, researchers used four-line static loading to investigate pre-cracking behavior, cracking pattern, deflection, load capacity, and strain.