ABSTRACT
Concrete infrastructures underlie different and complex durability-related exposures which can lead to serious damages of the structure. The chloride-induced corrosion of the reinforcement is one of the major durability problems. For chloride contaminated infrastructures the realistic assessment of the current state and the prediction of the residual lifetime can be realised by means of appropriate models which are based on the Fick’s second law of diffusion. In this paper the mathematic modelling of the chloride ingress in connection with the corresponding deterioration models will be discussed. Based on the diffusion models and measured chloride profiles the determination of the diffusion coefficient by means of a developed engineering software tool will be shown. Using the example of an existing pedestrian bridge an exemplarily residual service life prediction will be performed.
