Comparison of 1D and 2D chloride ingress models in terms of accuracy

In concrete structures subjected to chlorides such as coastal structures or roads treated with de-icing salts, corrosion will appear in due time, compromising their structural reliability. In order to predict the deterioration of the structure, an accurate prediction of the chloride ingress into concrete is required. This work compares different analytical and numerical chloride ingress models for two-dimensional problems in terms of their accuracy. A new analytical diffusion model is proposed for situations with multiple edges or corners of a cross-section, providing an approximate practical tool to quantify the chloride ingress for 2D scenarios.