Corrosion of reinforcement is the most common cause of deterioration of reinforced concrete bridges. Many existing bridges show significant corrosion; it is not uncommon that cover spalling has occurred. An important question is how reliable these bridges are; how can the load-carrying capacity of a corrosion damaged bridge be calculated?
The aim of this project is to better understand the structural effects of reinforcement corrosion. Furthermore, to develop models to describe the effect of reinforcement corrosion on the structural behaviour and load-carrying capacity of bridges. Earlier research within this field has identified the main uncertainties in the models and methods available today. In this project, one of the main uncertainties will be addressed; i.e. remaining anchorage when severe corrosion causes spalling of the cover. A model will be developed and verified by comparison to both test results available in literature and experiments carried out within this project. The results from the project can be used at assessment of the residual load-carrying capacity of corrosion-damaged concrete bridges.
The project was carried out at the Division of Structural Engineering.
Björn Engström (Chalmers)
Ebbe Rosell (Vägverket)
Jonas Magnusson (NCC)
Kamyab Zandi Hanjari (Chalmers)
Karin Lundgren (Chalmers)
Kent Gylltoft (Chalmers)
Mario Plos (Chalmers)
Mudaher Hamed Mushin (Banverket)
Per Kettil (Skanska)
Per-Ola Svahn (Skanska)
Peter Utgenannt (CBI)
Poul Linneberg (COWI)
Robert Ronnebrant (Vägverket)
Valle Janssen (Banverket)
Vägverket and Banverket (Trafikverket, The Swedish Transport Administration)