EXPERIMENTAL STUDY ON PERFORMANCE OF HYBRID FIBRE REINFORCED CONCRETE USING STEEL, POLYPROPYLENE AND RECYCLED POLYETHYLENE TEREPHTHALATE FIBRE

Abstract

Concrete with different short random discrete low and high modulus fiber is one of the special and high performance concrete. Development of such concrete increases the wide application of fiber reinforced concrete in various infrastructure applications. In this study, both low and high modulus fibres were used to develop the hybrid fiber reinforced concrete. Steel fiber is taken as high modulus fiber and polypropylene, recycled polyethylene terephthalatefibre is taken as a low modulus fiber. Totally ten mixes were used for investigation including conventional concrete. Three mono fiber mixes developed using steel, polypropylene and recycled polyethylene terephthalate fibres with volume fraction of 0.5%. Six hybrid fiber using steel fiber and polypropylene fiber with three different volume fraction and steel fiber and recycled polyethylene terephthalatefibre with three different volume fraction was used under investigation. Mix with 0.25% volume fraction steel fiber and 0.25% volume fraction polypropylene fiber exhibit better than the other mixes.