Prediction of long-term chloride concentration in concrete

MANGAT, P. S. and MOLLOY, B. T. (1994). Prediction of long-term chloride concentration in concrete. Materials and structures, 27 (170), 338-346.

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Link to published version:: 10.1007/BF02473426

Abstract

The paper presents a wide range of experimental data of the authors and of other researchers on acid-soluble chloride diffusion in different mixes of concrete, and shows conclusively that the chloride diffusion coefficient D(c) is strongly dependent on the period of exposure of concrete to a chloride environment. Consequently, long term prediction of chloride concentrations on the basis of Fick's second law of diffusion, which inherently assumes a constant value of D(c), is not an accurate procedure. A differential equation is derived based on the above law of diffusion, which takes into account the time variation of D(c), and a procedure is outlined for the accurate prediction of long term chloride concentrations in concrete. The chloride concentration profiles derived using this procedure show good correlation with experimental data.

Item Type: Article
Research Institute, Centre or Group: Materials and Engineering Research Institute > Structural Materials and Integrity Research Centre > Centre for Infrastructure Management
Identification Number: 10.1007/BF02473426
Depositing User: Ann Betterton
Date Deposited: 05 Feb 2010 16:31
Last Modified: 05 Feb 2010 16:31
URI: http://shura.shu.ac.uk/id/eprint/1050

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