THE EFFECT OF SIFCON ON TORSIONAL BEHAVIOR OF REINFORCED CONCRETE BEAMS

الملخص

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 to study the influence of SIFCON on the torsion behavior of reinforced concrete beams. In the experimental program, five beam specimens are cast and tested under pure torsion. Two of them were from normal concrete as a reference, two from SIFCON with a steel fiber volume of 10% and the last beam was normal concrete strengthening by SIFCON with a steel fiber volume of 10%. The results have indicated enhancement in an ultimate torsional moment of SIFCON beams when compared with the reference, normal concrete beam. In addition, by reducing the twist angle and increasing torsional stiffness, the resistance moment of torsion was improved.