THE EFFECT OF SIFCON ON TORSIONAL BEHAVIOR OF REINFORCED CONCRETE BEAMS

Abstract

In recent years, research into the effects of torsion in concrete members and the impact of novel materials on torsional behavior has increased. Slurry Infiltrated Fiber Concrete (SIFCON) is a special kind of Fiber Reinforced Concrete (FRC). The purpose of this research is studying the influence of SIFCON on torsion behavior of reinforced concrete beams. In experimental program, five beam specimens are casted and tested under pure torsion. Two of them from normal concrete as a references, two from SIFCON with steel fiber volume 10% and the last beam was normal concrete strengthening by SIFCON with the steel fiber volume 10%. The results have been indicated enhancement in ultimate torsional moment of SIFCON beams when compared with reference, normal concrete beam. In addition, by reducing the twist angle and increasing torsional stiffness, the resistance moment of torsion was improved.