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- Cathodic protection (4)
- Steel in concrete (3)
- Bimetallkorrosion (2)
- Cathodic Protection (2)
- Chloridinduzierte Korrosion (2)
- Concrete (2)
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- Kathodischer Korrosionsschutz (2)
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Long-term experiences with cathodic corrosion protection of steel reinforced concrete structures
(2002)
Korrosionsbedingte Schadensfälle an nichtrostenden Stählen - Gründe und Vermeidungsstrategien
(2003)
Gebrauchssicherheit von Kochgerät aus Edelstahl - Elektrochemische Messungen zur Ni-Abgabe (Teil 1)
(1998)
Einleitung; Grundlagen der Bimetallkorrosion (Kontaktkorrosion); Einflussgrößen und Beispiele: Elektrolytwiderstand, Befeuchtungsdauer/Umgebung, Kinetik der Elektrodenreaktionen, Flächenverhältnis Kathode/Anode; Praktische Erfharungen in verschiedenen Anwendungsbereichen: Wasser- und Abwassertechnik, Bauteile an der Atmosphäre, Bauwesen, Fahrzeugbau; Häufige gestellte Fragen; Vermeidung von Bimetallkorrosion; Literatur
Cathodic protection (CP) is a common method for rehabilitation of reinforced concrete structures suffering from Chloride induced corrosion. A sufficient protection of the corroding rebar can be ensured by use of several protection criteria. The use of these assessment criteria, in particular the so called 100 mV-criterion, can lead to erroneous resuits for certain unconventional arrangements of rebar and cp anode.
Therefore a joint research project of the Institute for Building Materials Research, RWTH-Aachen University, Germany, (ibac) and the Federal Institute for Materials Research and Testing, Berlin, Germany, (BAM) has been set up to determine the applicability of CP under arbitrary geometrical conditions. A special focus was set on the applicability of surface applied anode Systems for protection of the reinforcement of structures opposite to the accessible side (e.g. outer side of tunnel Shell, Bridge deck protected from inside a box girder) In this paper, the impact of the time dependent changes of the Polarisation behaviour of the rebar on the current and potential distribution is shown by means of parametric studies using the FEM method.