Title:
Modeling of Chloride Diffusion in Concrete and Determination of Diffusion Coefficients
Author(s):
Nagesh M. and Bishwajit Bhattacharjee
Publication:
Materials Journal
Volume:
95
Issue:
2
Appears on pages(s):
113-120
Keywords:
Boltzmann Transformation; cement; chloride diffusion coefficient;
chloride profile; concrete; diffusion coefficient; experimental methodology;
mathematical model; saturated concrete; solution; unsaturated concrete;
DOI:
10.14359/356
Date:
3/1/1998
Abstract:
In this paper a new form of mathematical model for chloride ingress in concrete is presented to review the process of chloride ingress in saturated and unsaturated concrete. Material parameters reviewed are the ion diffusion coefficient and solution diffusion coefficient, both of which have been shown to be concentration dependent, rendering the chloride diffusion process to be nonlinear. A simple experimental methodology and a calculation procedure are proposed, enabling the estimation of chloride diffusion coefficients from experimentally determined chloride and solution profiles in a short time.