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Durability indicators: relevant tools for performance-based evaluation and multi-level prediction of RC durability



Author(s): V. Baroghel-Bouny
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: 3 - 30
Total Pages: 28
Language: English


Abstract: 
This paper presents a new approach devoted to the evaluation and the prediction of the durability of reinforced concrete (RC) structures. It is based upon durability indicators (DIs). First, the selected panel of "universal" DIs is presented. A system of classes with respect to the "potential" durability of RC is then proposed relatively to these DIs. These classes are intended for mixture comparison and selection. In addition, with the purpose of protecting structures against carbonation- or chloride-induced corrosion, performance-based specifications are suggested, as a function of the environmental conditions and of the target service life. Furthermore, within the framework of the prediction of the service life of new RC structures at the design stage or of the "residual" lifetime of existing and possibly deteriorated structures, a multi-level modelling approach is proposed, after a condensed state-of-the-art devoted to chloride ingress and carbonation models. In the selected models, the DIs are introduced as input data, while the so-called monitoring parameters are the outputs. The validation and the application of the described performance-based and predictive approach are illustrated in this paper by experimental results obtained on a broad range of concretes and by numerical simulations involving several types of models.


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