Statistical analysis of corrosion impact for marine structures: overview of French structures in several harbours

Alexandre Clément (1) , Jérôme Boéro (1) , Franck Schoefs (1) , Jean-Bernard Memet (2)

1 GeM - Institut de Recherche en Génie Civil et Mécanique
2 A-CORROS

Steel structures in harbour are subjected to corrosion process. This phenomenon is very complex due to the nature of the environment (estuary, sea), the type of the structure and the use of the structure in the harbour (tidal area, basin at constant level). This phenomena needs to be characterized for mechanical calculations which take into account the loss of thickness. Ultrasonic residual measurements allow determining profiles of loss of thickness and identifying the areas which are the most affected by corrosion. Several inspection campaigns have been performed in some French harbours in the last decade which lead to a great number of measurements with respect of a protocol given by the CETMEF ("Centre d'Etudes Maritimes et Fluviales"). This paper proposed a statistical study of sixteen French wharves which have been inspected during the last decade. Depending on the environmental conditions for each structure, we show if they are affected by corrosion and where the loss of thickness is high.

Mots clés: corrosion; steel; loss of thickness; on-pile wharf; sheet-piles; ultrasonic measurement

Domaines: Mécanique [physics.med-ph]; Matériaux

Alexandre Clément, Jérôme Boéro, Franck Schoefs, Jean-Bernard Memet. Statistical analysis of corrosion impact for marine structures: overview of French structures in several harbours. 1st International Conference on Applications Heritage and Constructions in Coastal and Marine Environment, 2008, Lisboa, Portugal. ⟨hal-01008946⟩