Modelling formation and development of longitudinal cracks in concrete crossing corroding reinforcement

Abstract

Tensile stresses in concrete occur under the action of reinforcement rust pressure. When they exceed concrete tensile strength or concrete extension strain exceeds limit value, concrete cracks. Physical and numerical models of such cracks are proposed for analysis of formation and development based on the main assumption that in the place of the rusting bar there is an artificial cut of circular shape, the contour of which is subjected to a pressure, imitating pressure of rust. [...].