Experimental and nonlinear finite element analysis of fiber-cementitious matrix bond-slip mechanism

Abstract

The fiber-matrix bond-slip process is highly complex that involves cohesion, interfacial debonding, deformation with geometric nonlinearity, material plasticity as well as sliding frictional contact. It is also the governing failure mechanism during the post-peak phase of loading that significantly affects the ductility and toughness of fiber reinforced concrete (FRC). Therefore, a detailed analysis of the embedded mechanisms is essential to fully enumerate the composite behavior of FRC. This paper has been to experimentally and numerically investigate the complete bond-slip response of deformed metallic fiber pullout from cementitious matrix. Extensive validations using the experimental results obtained from recent experimental investigations and technical literature have been conducted and will be presented in this paper. © RILEM 2012.