ABSTRACT
In this study, a numerical model was used for prediction of chloride penetration into concrete by taking into account a variable chloride diffusivity, non-linear chloride binding and other practical parameters such as changes in surface concentration and temperature, degree of hydration, pore content, binder content in concrete, etc. The counter diffusion of hydroxide ions was also considered in the model. A number of specimens from the field were tested and compared with the predicted chloride profiles. The results correspond fairly well. The cover thickness of a concrete structure designed for a certain service life could then be estimated from the predicted chloride profiles by giving a certain threshold value and the predicted results from different threshold values are discussed.
