ESTIMATION OF CORROSION INITIATION TIME WITH OBSERVED DATA

摘要

Chlorination affects reinforced and pre-stressed concrete bridges, and methods are being developed to predict the remaining service life of bridges affected by chlorination. In the probabilistic estimation of service life of bridges, authors have used random field theory to model the variation of surface chloride concentration and effective diffusion coefficient. Random field theory requires the value of a parameter called the 'scale of fluctuation' from experimental data. In this paper Kriging method has been applied to estimate the missing data on surface chloride concentration. These values are then used in the estimation of the scale of fluctuation of surface chloride concentration.