Experimental studies on flexural behavior of self compacting hybrid steel fiber reinforced concrete beams

Abstract

Self compacting concrete (SCC) is the special concrete which is a lead significant step towards effectiveness at building site. By addition of fiber to SCC it helps in improvement of performance of concrete structures. Self compacting fibers reinforce concrete (SCFRC) combines the benefits of SCC and fiber reinforced concrete (FRC). Fibers are used to enhance harden properties of concrete. Steel fibers plays an important role in arresting initial cracks and prolongs the failure than all other fiber. The objective of this study is to evaluate the fresh and harden properties SCFRC with and without fibers. Depending upon the aspect ratio steel fiber the flexural behavior varies, hence in this work two steel fiber with aspect ratio 50 and 60 with different combination ratio were used to test SCFRC beams. Beams were casted and tested under cyclic loading to study the ductile and energy dissipation of properties of beams. The effect of using steel fiber reinforced self compacting concrete (SFRSCC) in place of SCC was studied. The properties of ultimate strength, ductility, energy dissipation and stiffness were compared with different aspect ratio combination of steel fiber.