Experimental study on the steel-fibre contribution to concrete shearbehaviour

This paper aims at studying the shear contribution of steel fibres in concrete. Ten reinforced concrete (RC) and steel-fibre reinforced concrete (SFRC) initially uncracked push-off specimens were tested. Average normal and transverse strains at the vicinity of the shear plane were measured by photogrammetry with good accuracy. Experimental results reveal that constant shear stress flow assumption is adequate. SFRC specimens exhibited greater shear stiffness compared to RC. Moreover, shear effectiveness of fibres after diagonal cracking seems significantly dependent on reinforcement crossing the shear plane. Numerical modelling of RC and SFRC push-off specimens shows good global behaviour.This work forms part of the PAID-06-11 programme supported by Universitat Politecnica de Valencia, and project "FISNE" BIA2012-35776 supported by the Spanish Ministry of Economy and Competitiveness.Navarro-Gregori, J.; Eduardo José Mezquida Alcaraz; Serna Ros, P.; Echegaray-Oviedo, JA. (2016). Experimental study on the steel-fibre contribution to concrete shearbehaviour. Construction and Building Materials. (112):100-111. https://doi.org/10.1016/j.conbuildmat.2016.02.157S10011111