Investigation of Cathodic Protection of Reinforced Concrete in Marine Environment for the Application of Floating Offshore Wind Turbine - IMT Mines Alès
Communication Dans Un Congrès Année : 2024

Investigation of Cathodic Protection of Reinforced Concrete in Marine Environment for the Application of Floating Offshore Wind Turbine

Marine Bayle
  • Fonction : Auteur
Stéphane Laurens
  • Fonction : Auteur
Chantal Chalhoub
  • Fonction : Auteur
Elie Sassine
  • Fonction : Auteur

Résumé

Reinforced concrete (RC) floaters to support floating offshore wind turbine (FOWT) can exhibit premature corrosion due to high chloride content in the marine environment. To address the concerns about their deterioration in harsh marine environment, such as corrosion of reinforcements, eventually influenced by biofouling on the material’s surface, this study has been designed to understand the interrelations between natural seawater, biofouling, and cathodic protection for RC structures. The objective of the research study is to quantify the effectiveness of cathodic protection using sacrificial aluminium galvanic anode in conjugation with biofilm development. However, this paper presents a part of the long-term research study investigating the comparative effects of galvanic anodes on passive steel in concrete, using CEM I and CEM V cement types, in seawater. Experimental tests were conducted on RC blocks installed in the tidal zone of Banyuls-sur-mer harbour and connected to a data logger for continuous monitoring of the electrochemical state of steel. After three months of immersion, the exposed surface of RC blocks exhibited biofouling, while its influence on the cathodic protection should be probed in detail. Monitoring the mixed potential under temporal variations require careful consideration of tidal influences to ensure continued protection of reinforced concrete. Each binder was tested with three replicate RC blocks, in which the rebars exhibited similar trends in mixed potential and protection current density over time. The aluminium anode delivered slightly higher currents, resulting in greater consumption in the rebars of CEM I reinforced concrete blocks compared to those in CEM V.
Fichier non déposé

Dates et versions

hal-04748056 , version 1 (22-10-2024)

Identifiants

  • HAL Id : hal-04748056 , version 1

Citer

Deeksha Margapuram, Marie Salgues, Raphaël Lami, Benjamin Erable, Océane Thibault, et al.. Investigation of Cathodic Protection of Reinforced Concrete in Marine Environment for the Application of Floating Offshore Wind Turbine. CONSEC 24 - 10th International Conference on Concrete under Severe Conditions, Sep 2024, Chennai, India. ⟨hal-04748056⟩
42 Consultations
0 Téléchargements

Partager

More