It is well recognized that the material properties of a reinforced concrete (RC) structure and its dimensions are random due to the spatial variability associated with workmanship, environment and other factors. This randomness causes spatially corrosion damages such as steel corrosion, corrosion crack and cover spalling. Therefore, it is of great importance to simulate deterioration processes of RC structures in a stochastic field context. In this paper, based on a probabilistic model for steel corrosion in RC structures, steel corrosion distributions over RC slabs is estimated using 2D Gaussian stochastic fields. In an illustrative example, the time-dependent structural performance of a RC slab represented by the stochastic field was estimated using 2D nonlinear finite element method.
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