Peter Minne

Evaluation and Practical Implementation of Probabilistic Calculations of Chloride Penetration for Belgian Concretes in the Framework of a Durable Design

In order to overcome the problems of the current deemed-to-satisfy approach with respect to a durable concrete design, an adaption is required. Limiting values derived from measured material properties can be used as reference values. In case of chloride induced corrosion, the chloride migration coefficient is the most appropriate variable. Based on a full probabilistic design the maximum allowed chloride migration coefficient for a particular concrete type is determined in order to withstand the conditions of the exposure class. The results are given as tabulated values in function of the exposure class, the concrete cover and the initial chloride content. By utilizing the PSF-approach design charts have been derived. Values for the maximum chloride content at the depth of the reinforcing steel in function of material properties and exposure class can be determined for critical environmental conditions and a design service life of 50 years.