Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A localised electrochemical investigation into the adsorption of amino-alcohol corrosion inhibitors to the surface of mild steel under simulated concrete pore solution conditions
The use of concrete corrosion inhibitors has been proposed as a technique for the repair and maintenance of concrete structures. However, the various commercially available inhibitors differ not only in their respective formulations, but also in their mechanisms of corrosion inhibition for mild steel reinforcement. Manufacturers of one group of multi-functional corrosion inhibitors, based on organic and inorganic film-forming blends of amino-alcohol compounds, claim that they provide both anodic and cathodic inhibition by adsorption at the steel/concrete interface. In order to assess the functionality of such inhibitors, localised electrochemical impedance spectroscopy (LEIS) and other associated techniques have been used to examine the adsorption of an amino-alcohol based concrete corrosion inhibitor at the surface of mild steel under simulated pore solution conditions. It is claimed, by the manufacturers of these inhibitors, that they 'migrate' through the concrete in both a liquid and vapour phase to form an adsorbed layer at the steel/concrete interface which is typically in the order of 0.01 to 0.1 microns in thickness. Experiments have shown that measured variations in localised impedance can be associated with the formation and breakdown of passive films formed on the surface of mild steel and the adsorption of the inhibitor at the steel/electrolyte interface.
A localised electrochemical investigation into the adsorption of amino-alcohol corrosion inhibitors to the surface of mild steel under simulated concrete pore solution conditions
The use of concrete corrosion inhibitors has been proposed as a technique for the repair and maintenance of concrete structures. However, the various commercially available inhibitors differ not only in their respective formulations, but also in their mechanisms of corrosion inhibition for mild steel reinforcement. Manufacturers of one group of multi-functional corrosion inhibitors, based on organic and inorganic film-forming blends of amino-alcohol compounds, claim that they provide both anodic and cathodic inhibition by adsorption at the steel/concrete interface. In order to assess the functionality of such inhibitors, localised electrochemical impedance spectroscopy (LEIS) and other associated techniques have been used to examine the adsorption of an amino-alcohol based concrete corrosion inhibitor at the surface of mild steel under simulated pore solution conditions. It is claimed, by the manufacturers of these inhibitors, that they 'migrate' through the concrete in both a liquid and vapour phase to form an adsorbed layer at the steel/concrete interface which is typically in the order of 0.01 to 0.1 microns in thickness. Experiments have shown that measured variations in localised impedance can be associated with the formation and breakdown of passive films formed on the surface of mild steel and the adsorption of the inhibitor at the steel/electrolyte interface.
A localised electrochemical investigation into the adsorption of amino-alcohol corrosion inhibitors to the surface of mild steel under simulated concrete pore solution conditions
Morlidge, J.R. (Autor:in) / Bigland, D.J. (Autor:in) / Sergi, G. (Autor:in) / Badger, S. (Autor:in)
2000
8 Seiten, 3 Bilder, 37 Quellen
Aufsatz (Konferenz)
Englisch
Effectiveness of corrosion inhibitors in simulated concrete pore solution
| Taylor & Francis Verlag | 2020
| Taylor & Francis Verlag | 2024
| British Library Online Contents | 2011