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  • Structural Concrete, Vol. 8, no. 1, December 2007

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. Fran├žois, 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. 

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