Structural Concrete, Vol. 8, no. 3, September 2007
Serviceability model of corroded reinforced concrete based on the CEB-FIP model code
A. Castel, Laboratory of Materials and Construction Durability, Toulouse, France
Th. Vidal, Laboratory of Materials and Construction Durability, Toulouse, France
R. François, Laboratory of Materials and Construction Durability, Toulouse, France
In this paper, based on the main assumptions of the CEB-FIP model code, a model of corroded reinforced concrete behaviour is proposed. The model allows the quantification of the coupled effect of the steel cross-section reduction and the loss of the steel - concrete bond on deflection of reinforced concrete beams under service loads. To model the bond degradation, an environmental-damage variable is explicitly introduced into the steel - concrete bond relationship in order to take into account the slip between the steel and the concrete and then the reduction of the concrete tension stiffening. A validation is proposed on two 20-year-old corroded beams tested in flexure.
