Predicting the Likelihood and Extent of Reinforced Concrete Corrosion-Induced Cracking
Publication: Journal of Structural Engineering
Volume 131, Issue 11
Abstract
Corrosion-induced cracking is observed to vary spatially over concrete surfaces. A two-dimensional spatial time-dependent reliability model is developed to predict the likelihood and extent of corrosion-induced cracking. The spatial variability of concrete cover, concrete compressive strength, and surface chloride concentration are considered in the spatial time-dependent reliability model. The reliability analysis predicts: (1) probability of the first incidence of cracking, (2) proportion of an area subject to severe cracking, and (3) probability that a given percentage of a concrete surface has cracked. Corrosion-induced crack initiation and propagation models are developed for limit crack widths up to 1 mm. The present paper presents results for a typical reinforced concrete bridge deck. The effect of concrete cover, concrete quality, limit crack width, and environment are considered. It was shown that for poor durability design specifications the likelihood and extent of spalling is high. When combined with a life-cycle cost analysis, this predictive capability enables the extent of future repair costs to be estimated and the optimal durability design specifications or repair/maintenance strategies determined.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 131 • Issue 11 • November 2005
Pages: 1681 - 1689
Copyright
© 2005 ASCE.
History
Received: Jul 13, 2004
Accepted: Dec 17, 2004
Published online: Nov 1, 2005
Published in print: Nov 2005
Notes
Note. Associate Editor: Shahram Sarkani
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