ABSTRACT
The paper deals with the behaviour of a reinforced concrete beam without vertical reinforcement under three-point bending.The beam failed in shear due to over-reinforcement.The experiments were performed at the laboratory scale using a micro-CT system.They were next reproduced in numerical analyses using the 3D discrete element method (DEM).The 4-phase model of concrete was used with meso-strucure, based directly on micro-CT images. A satisfactory agreement between experimental and numerical outcomes was achieved with respect to the location and direction of a critical macro-crack.
