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19. Application of an atmospheric corrosion model to the prediction of induced damage in reinforced concrete structures



Title: 19. Application of an atmospheric corrosion model to the prediction of induced damage in reinforced concrete structures
Author(s): A. Millard, V. Leyre, V. L'Hostis
Paper category : conference
Book title: NUCPERF 2009 - Long Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plants and Waste Management
Editor(s): V. L'Hostis, R. Gens, C. Gallé
Print-ISBN: 978-2-35158-072-1
e-ISBN: 978-2-35158-087-5
Publisher: RILEM Publications SARL
Publication year: 2009
Pages: 175 - 183
Total Pages: 9
Nb references: 12
Language: English


Abstract: The prediction of concrete cracking due to corrosion is a major issue for the evaluation of the durability of structures and the choice of maintenance policies. Because of the complexity of the phenomenon, a fully predictive approach is still missing. The proposed work can be considered as one step in this direction. For the study of long term atmospheric corrosion of rebars embedded in concrete, a reactive transport model has been developed, considering the kinetic of oxygen diffusion through the system and its consumption at the metal/corrosion product layer interface as a function of concrete water saturation degree. Corrosion products growth can then be simulated and used as input to a mechanical model capable of predicting the damage induced by corrosion. This multi-physics model has been implemented and first applied to a simple bi-dimensional reinforced concrete slab, in order to investigate the development of the cracks pattern. Then the model has been applied to a three-dimensional beam, inspired from chloride corrosion experiments performed at LMDC (INSA Toulouse).
Special attention has been given to the steel concrete interface degradation, in order to investigate its role in the corrosion propagation phase.


Online publication: 2009-11-16
Publication type : full_text
Public price (Euros): 0.00