Predicting Chloride Profiles in Concrete

Abstract

Laboratory studies were undertaken to compare chloride (Cl−) profile data to predictions obtained using ASTM C 1202 of Cl− diffusion into concrete. The effective diffusion coefficients (Deff) derived can be used to determine long-term Cl− profiles of concrete structures. Equations relating Deff with resistivity and permeability of concrete were developed. One- and two-dimensional models were used to determine Cl− profiles of Cl− ions entering concrete in structures such as square piles and decks.