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An electrochemical and analytical approach to the inhibition mechanism of an amino-alcohol-based corrosion inhibitor for reinforced concrete |
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| Authors: | HE Jamil R Boulif MGS Ferreira |
| Affiliation: | a University of Kenitra, Kenitra, Morocco b Instituto Superior Tecnico, Dep. Chem. Eng., Av Rovisco Pais, 1049 001 Lisbon, Portugal c Lab. de Recherche en Matériaux, CERPHOS, Groupe OCP, Casablanca, Morocco d Department of Ceramics and Glass Engineering, University of Aveiro, Aveiro, Portugal |
| Abstract: | Laboratory investigations were performed in order to assess the effectiveness and the inhibition mechanism of an amino alcohol-based inhibitor currently used as admixture to prevent corrosion of steel in concrete. The investigation was performed in the presence of chloride ions, using solutions simulating the concrete interstitial solution. Electrochemical measurements allowed to conclude that, an inhibitor film is formed on the surface hindering the anodic activity. Furthermore, the analytical investigation through the use of X-ray photoelectron spectroscopy (XPS) shows that the inhibitor film is able to complex with the chloride ion. |
| Keywords: | Corrosion Inhibitor Electrochemical impedance Chloride Reinforced concrete |
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