Service Life Prediction for Concrete Structures by Time-Depth Dependent Chloride Diffusion Coefficient
Publication: Journal of Materials in Civil Engineering
Volume 22, Issue 11
Abstract
This paper uses the time-depth dependent chloride diffusion coefficient obtained from the analytical solution of the nonlinear chloride diffusion equation at nonsteady state to propose a new life prediction model of concrete structures exposed to a chloride environment. The proposed theoretical model treats the chloride diffusion coefficient as a variable dependent on time, depth, and chloride content of concrete rather than a constant as normally assumed. Detailed step-by-step guides to the practical application with this model are provided. Based on the illustrated example, the comparison of the service life prediction calculated by this model and the well-known LightCon model is addressed. However, the proposed model should remain to be verified by using long term field data for the potential failure impacts in the durability design of concrete structures.
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References
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Information
Published In
Journal of Materials in Civil Engineering
Volume 22 • Issue 11 • November 2010
Pages: 1187 - 1190
Copyright
© 2010 ASCE.
History
Received: Oct 28, 2008
Accepted: Mar 4, 2010
Published online: Mar 6, 2010
Published in print: Nov 2010
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