Probabilistic modeling of chloride-induced corrosion in concrete structures using first- and second-order reliability methods

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DOIResolve DOI: http://doi.org/10.1016/j.cemconcomp.2012.05.001
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TypeArticle
Journal titleCement and Concrete Composites
ISSN0958-9465
Volume34
Issue9
Pages10821093
SubjectChloride ingress; Corrosion initiation; Uncertainty modeling; First- and second-order reliability methods; Importance factor; Probability of corrosion
AbstractConcrete structures are subjected to chloride-induced corrosion that can lead to shortened service life. Reliable predictions of life cycle performance of concrete structures are critical to the optimization of their life cycle design and maintenance to minimize their life cycle costs. This paper presents two simplified semi-analytical probabilistic models based on the first- and second-order reliability methods to model the uncertainty of the key parameters including surface chloride concentration, chloride threshold, cover depth and diffusion coefficient, which govern the chloride ingress into concrete and corrosion of reinforcing steel. A case study of a reinforced concrete highway bridge deck is used to illustrate the capability and efficiency of these simplified probabilistic models in modeling the uncertainty and predicting the time-dependent probability of corrosion. The models enable to quantify the impact of the different governing parameters on probability of corrosion and service life, which can be used to develop cost-effective management strategies.
Publication date
LanguageEnglish
AffiliationConstruction; National Research Council Canada
Peer reviewedYes
IdentifierS0958946512001023
NPARC number21268692
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Record identifier07e4ee32-6128-4351-b072-bc1e0074c910
Record created2013-11-07
Record modified2016-05-09
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