Bonding Properties Between Corroded Steel Bars and High Performance Concrete

Abstract

Focus on the behavior of the bond between steel bars and high performance concrete with different corrosion rates, the corroded steel bars were simulated by changing the yield strength and elastic modulus of steel bars. The finite element software ABAQUS was in used to establish a 3-dimensional solid plastic damage model for reinforced high performance concrete, and the whole process of pull-out test was simulated. The findings demonstrate that the steel bar’s stress is transferred from the loading end to the free end of the concrete specimen and continuously decreases. Concrete’s stress continuously declines as it spreads from the steel bar interface to the surrounding area. The stress value of concrete increases initially and then gradually decreases with an increase in corrosion rate, and the ultimate slip value continuously decreases.