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Service-life prediction based on the rapid migration test and the clinConc model

Author(s): L. Tang
Paper category: Workshop
Book title: International RILEM Workshop on Performance Based Evaluation and Indicators for Concrete Durability
Editor(s): V. Baroghel-Bouny, C. Andrade, R. Torrent, K. Scrivener
ISBN: 978-2-912143-95-2
Pages: 157 - 164
Total Pages: 8
Language: English

This paper presents the predictive model for practical applications in performance-based service-life design regarding durability of reinforced concrete structures exposed to marine or de-icing salt environment. In the past decade the rapid chloride migration (RCM) test was developed in Sweden. Nowadays the RCM test has been used in many countries as a durability indicator for concrete's resistance to chloride ingress. In order to utilise the laboratory test results for prediction of chloride ingress, a mechanism-based model, called ClinConc, was developed in parallel. In this model, the primary input is the chloride migration coefficient from the RCM test, which describes the chloride transport property of concrete. The environmental parameters used in the model include free chloride concentration and temperature in the exposure environment. Recently, the ClinConc model has been further developed in a more engineer-friendly way for practical service-life prediction. The field data from 0.5 upt to 10 years' exposure in various conditions were used for verification of the model. In this paper, the verification results will be presented and the practical application of the model will be demonstrated.

Online publication: 2007
Publication Type: full_text
Public price (Euros): 0.00

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