Evaluating the effect of corrosion on service life prediction of RC structures - A parametric study

The structural degradation of concrete structures due to reinforcement corrosion is major durability issue all over the world, primarily when the rebar in the concrete is exposed to the marine or aggressive environment. In the present work, an attempt has been made in predicting the service life of RC structures taking into account well known corrosion models. Parametric studies are completed on Bazant's model, Morinaga's model, Wang and Zhao's model and IRC model to study the impact of cover thickness, corrosion rate, increase in diameter of the bar, perimeter of the bar, etc. This paper shows the consequences of the parametric investigation of the input parameters for four chosen consumption corrosion damage models. The adequacy of the models in predicting the service life is shown through four functional contextual analysis illustrations.