PREDICTION OF CHLORIDE PENETRATION INTO CONCRETE BY USING THE COMPUTER PROGRAM CLINCONC

摘要

This paper briefly describes the CTH rapid method for determining chloride diffusivity and the Windows based program ClinConc for modelling of chloride transport in concrete by using a numerical approach. In this numerical model most of the factors affecting chloride penetration have been considered. The main input data in the program include concrete mix design, workmanship and exposure conditions. The only parameter which must be measured is the chloride diffusion coefficient by the CTH rapid method. The chloride penetration profiles measured from different types of concrete exposed to the salt environment in the laboratory as well as the field were compared with those calculated by using the computer program ClinConc. The results show that the predicted chloride profiles correspond fairly well with the measured profiles, in spite of different concrete compositions and exposure conditions.