The effect of corrosion on bond strength of ribbed bars in reinforced concrete (RC) is studied by axisymmetric finite-element analysis, modelling different levels of confinement given by the transverse steel reinforcement. The importance of this parameter is highlighted by a summary of the experimental results in the literature. An approach is developed to model the corrosion product expansion causing concrete-cover cracking. The numerical analyses reproduce the experimental results of the bond tests performed in two different studies. A parametric study shows the effect of the varying transverse steel percentage on the residual bond strength, and the influence of different arrangements of confinement bars. These results lead to a discussion of the different findings of several experimental researches. The conclusions regard the main parameters to be included in a model to predict the bond strength of corroded bars. Some indications for the assessment of corroding structures are given.
No takes yet. Share an insight, caveat, or question.
Berra et al. (2003) studied this question.