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Life cycle of bridge grillages subjected to corrosion



Title: Life cycle of bridge grillages subjected to corrosion
Author(s): S. Imperatore, Z. Rinaldi
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: 477 - 484
Total Pages: 8
Nb references: 10
Language: English


Abstract: Many viaducts and bridges are subjected to environmental conditions and/or to the use of de-icing salt that may induce the corrosion phenomenon. Corrosion causes a diameter reduction of the reinforcement steel, a variation of the bond at the steel-concrete interface and the concrete cracking including spalling and delamination. In order to highlight the worsening of structural behavior of elements subjected to corrosion, the results of a numerical elaboration on bridge grilladges, subjected to pitting and uniform corrosion, are here reported.
Corrosion is simulated by reducing the steel section and by varying its mechanical properties, according to the degradation equations developed by the authors, on the basis of an experimental campaign carried out in the Laboratory of the Rome University "Tor Vergata".
The numerical evaluation aims at highlighting the worst scenario conditions for typical bridge grillage typologies, with the final scope of a prevision of their residual life, and their sensitivity to the corrosion phenomenon.


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