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Erscheinungsjahr
- 2016 (2) (entfernen)
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- Englisch (2)
Schlagworte
- Cathodic protection (1)
- Coating (1)
- Concrete (1)
- Corrosion (1)
- Cunductive (1)
- ICCP (1)
- KorroPad (1)
- Passive layer (1)
- Stainless steel (1)
- reinforcement (1)
Carbon-based conductive coatings are complex composites, consisting of an organic or inorganic binder and conductive carbon components, for application as anodes in impressed current cathodic protection systems of reinforced concrete structures. The electrochemical properties of three coatings at different humidity and in saturated calcium hydroxide solution were studied by electrochemical methods, such as electrochemical impedance measurement, measuring of open circuit potential over time and galvanostatic polarization.
The presented investigations have proved the principal suitability of the KorroPad method to assess the passive layer stability of stainless steels. The electrochemical mode of action could be described in detail and limitations of the applicability have been demonstrated. The influence of different surface finishes has been investigated and verified by known methods for describing corrosion resistances. As a result, the increased corrosion susceptibility of two ground surfaces has been detected, but also the corrosion resistance of further surface finishes could be confirmed.