Influence of hooked-end steel fibers on absorbed energy of slurry-infiltrated fiber concrete in flexural test

Abstract

Slurry-infiltrated fiber concrete (SIFCON) is a development in the field of steel fiber reinforced composite material. SIFCON is a fabrication method in which steel fibers are preplaced in a form to a desired capacity rather than being mixed and then cast or sprayed along with the concrete. In this study, fibers having aspect ratio/length of 80/60, 80/50 and 30/65 will be used for approximate fiber amounts of 1%, 2%, 3% and 4% by volume of concrete. Fiber orientation can seriously affect the properties of SIFCON where one can control the orientation easily. These properties are modulus of elasticity, absorbed energy, flexural strength, stress-strain behaviour, compressive strength, impact energy and water permeability. Absorbed energy is studied in comparison with conventional concrete in this paper. At end of this study, results are analyzed to end up with the optimum orientation, length and fiber diameter (fiber type) and volume of fibers to obtain the best results to reach admirable energy absorption capacity. © 2013 Taylor & Francis Group.