Portuguese approach for concrete durability related with reinforcement corrosion

Title: Portuguese approach for concrete durability related with reinforcement corrosion
Author(s): A. Valente Monteiro, M. Vieira, A. Gonçalves
Paper category : conference
Book title: 2nd International Symposium on Service Life Design for Infrastructures
Editor(s): K. van Breugel, Guang Ye, Yong Yuan
Print-ISBN: 978-2-35158-096-7
e-ISBN: 978-2-35158-097-4
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 49 - 56
Total Pages: 8
Nb references: 7
Language: English

Abstract: The introduction of the European Standard EN 206-1:2000 "Concrete - Part 1: Specification, performance, production and conformity" mentions that during the development of the standard it was considered a performance-based approach to the specification of durability. For that purpose, a review of methods for specifying the concrete based on performance and test methods was carried out. However, CEN / TC 104 concluded that these methods are not yet sufficiently developed to be considered in the EN 206-1 standard, but acknowledged that some members of CEN have gained confidence in testing and local criteria. For this reason, EN 206-1 allows the continuation and development of such practices valid in the place of use of concrete, as an alternative to the prescriptive approach.

This paper presents the existing approaches in Portugal to guarantee the service life design of 50 or 100 years for concrete structures in environments corresponding to different classes of exposure concerning carbonation and chloride-induced corrosion.

One of the approaches is prescriptive, where requirements for minimum binder content, minimum cover, minimum strength and maximum water-binder are given for different exposure classes in function of the cement type, and the other is based on probabilistic models using performance properties of concrete.

Online publication: 2011-04-20
Publication type : full_text
Public price (Euros): 0.00