2011/03/21 by Peter Grassl, Grassl, Peter, Trevor G. Davies +2
Engineering · Materials Science · #Concrete Corrosion and Durability #Structural Behavior of Reinforced Concrete #Corrosion Behavior and Inhibition
paper · pdf · doi:10.48550/arxiv.1103.4162
A lattice approach is used to describe the mechanical interaction of a\ncorroding reinforcement bar, the surrounding concrete and the interface between\nsteel reinforcement and concrete. The cross-section of the ribbed reinforcement\nbar is taken to be circular, assuming that the interaction of the ribs of the\ndeformed reinforcement bar and the surrounding concrete can be captured by a\ncap-plasticity interface model. The expansive corrosion process is represented\nby an Eigenstrain in the lattice elements forming the interface between\nconcrete and reinforcement. Several pull-out tests with varying degree of\ncorrosion are analysed. The numerical results are compared with experiments\nreported in the literature. The influence of the properties of concrete are\nstudied. The proposed lattice approach offers insight into corrosion induced\ncracking and its influence on bond strength.\n