Experimental Study on Flexural behaviour of Hybrid Fibre Reinforced Concrete with Elastomeric Pads

This paper presents the effect of flexural behavior of fibre reinforced concrete with and without elastomeric pads. A total of 6 reinforced concrete beams were cast and tested in the present investigation. Concrete of M20 grade was designed and crimped steel fibres and polypropylene fibres were used in hybrid form. The main variables considered were the volume fraction of (i) Crimped steel fibres viz. 0.25%, 0.5% and 0.75% (ii)Polypropylene fibres viz. 0.75%, 0.5%, and 0.25%. The combination of 0.75% volume fraction of steel fibres and 0.25% volume fraction of polypropylene fibres gave better performance with respect to strength and energy dissipation capacity than the other combinations. The performance of specimens was compared with the control mix without hybrid fibres. Then the behavior flexural member with and without elastomeric pads are compared, they are also compared with conventional specimens with and without elastomeric pads. The results show that the flexural behavior of specimen with fibres and elastomeric pads showed better performance.