Structural assessment of RC elements subjected to localised and general corrosion

Title: Structural assessment of RC elements subjected to localised and general corrosion
Author(s): M. Dekoster, F. Buyle-Bodin, O. Maurel
Paper category : conference
Book title: 2nd International RILEM Workshop on Life Prediction and Aging Management of Concrete Structures
Editor(s): D.J. Naus
Print-ISBN: 2-912143-36-5
e-ISBN: 2912143780
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 115 - 125
Total Pages: 11
Nb references: 6
Language: English

Abstract: The corrosion of steel reinforcement is one of the main aging factors of RC structures. Corrosion is due to carbonation or chloride attack, which induce respectively general and localised corrosion. The consequences of corrosion at local scale are a decrease of sound steel cross section, a development of cracking in concrete cover, and a loss of steel-concrete bond. A Finite Element study has been developed to simulate the flexural behaviour of corroded RC elements. The FE calculation has been calibrated with two experimental studies, the first conducted on beams corroded by an electric current inducing general corrosion, and the second on beams corroded by salted fog inducing localised corrosion. Special elements have been used to represent the interface between steel and concrete, called rust elements. The validated and calibrated FE model has been used to simulate various conditions of corrosion with different percentage for different lengths of corrosion at mid-span area. For each case the load and the deflection corresponding to the serviceability limit state were computed. This allows the organisation into a hierarchy and the checking of critical situations.

Online publication: 2003-04-02
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143780.011