Depassivation time estimation in reinforced concrete structures exposed to chloride ingress: A probabilistic approach
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Title: | Depassivation time estimation in reinforced concrete structures exposed to chloride ingress: A probabilistic approach |
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Authors: | Vera Almenar, Guillem de | Anton, Carlos | López García, María Pilar | Climent, Miguel-Ángel |
Research Group/s: | Durabilidad de Materiales y Construcciones en Ingeniería y Arquitectura |
Center, Department or Service: | Universidad de Alicante. Departamento de Ingeniería Civil |
Keywords: | Corrosion | Reinforced concrete | Probability | Chloride |
Knowledge Area: | Ingeniería de la Construcción |
Issue Date: | May-2017 |
Publisher: | Elsevier |
Citation: | Cement and Concrete Composites. 2017, 79: 21-33. doi:10.1016/j.cemconcomp.2016.12.012 |
Abstract: | Estimation of depassivation time is a key issue in corrosion prevention. A method to get a probabilistic model from a deterministic one is presented and applied to three simple models: square root of time (SRT), error function (EF) and constant flux (CF) models. Probability distributions of the involved random variables are needed as input parameters. Experimental data have been obtained from a concrete structure exposed to the atmospheric marine environment. These data are analysed to obtain the probability distributions of chloride transport parameters: penetration velocity k (SRT model), diffusion coefficient D (EF and CF models), surface chloride concentration CS (EF model), and chloride ingress flux J (CF model). These distributions are used to calculate the depassivation time probability distributions according to the three models and the orientation of the samples respect to the sea. This allows to estimate depassivation time for a given depassivation probability. |
Sponsor: | This work has been financially supported by the Ministerio de Economía y Competitividad of Spain and Fondo Europeo de Desarrollo Regional (FEDER) through project BIA2010-20548. M. P. López is grateful for a fellowship of the “Formación Personal Investigador (FPI)” programme (reference BES-2011-046401). |
URI: | http://hdl.handle.net/10045/73550 |
ISSN: | 0958-9465 (Print) | 1873-393X (Online) |
DOI: | 10.1016/j.cemconcomp.2016.12.012 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © 2017 Elsevier Ltd. |
Peer Review: | si |
Publisher version: | http://dx.doi.org/10.1016/j.cemconcomp.2016.12.012 |
Appears in Collections: | INV - DMCIA - Artículos de Revistas |
Files in This Item:
File | Description | Size | Format | |
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2017_de-Vera_etal_CementConcrCompos_final.pdf | Versión final (acceso restringido) | 607,15 kB | Adobe PDF | Open Request a copy |
2017_de-Vera_etal_CementConcrCompos_accepted.pdf | Accepted Manuscript (acceso abierto) | 937,52 kB | Adobe PDF | Open Preview |
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