FLEXURAL AND PUNCHING SHEAR CHARACTERIZATION FOR SELF COMPACTING CONCRETE REINFORCED WITH STEEL FIBRES

Steel fibre reinforced self compacting concrete (SFRSCC) possess the advantages of both Self compacting and fibre reinforced concrete. This paper deals with the behaviour and capability of SFRSCC in flexure and punching shear by conducting experimental investigation on prism and slab- column specimen. Six concrete mixes were considered for the study, three with fibres and three without fibres. Third -point loading and punching shear test was used to characterize the concrete reinforced with steel fibre volume fraction of 0.5&0.75%. Flexural studies demonstrated that, higher amount of steel fibres provide higher toughness which enables the material to take up large deflections. In the case of punching shear capacity, addition of fibres reported a substantial increase in capacity and also with increase in fibre dosage. It was also observed, at constant volume fraction of fibres, specimen with higher grade of concrete exhibited superior performance in flexure and punching shear.