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Investigations on the secondary protection mechanisms in cathodic protection applications

  • A joint research project was accomplished by ibac and BAM with the aim to develop a numerical model of cathodic protection (CP) of reinforced concrete with a special focus on CP of the rear reinforcement layer. The model was intended to include the effects of chemical alterations within the concrete and the steel concrete interface, which are induced by long-term application of CP. The investigations presented in this paper focus on the migration of chloride ions due to small electric fields as applied during cathodic protection of steel in reinforced concrete structures and its impact on polarisation characteristics. A comparatively new method, laser induced breakdown spectroscopy (LIBS), was used to determine chloride profiles on laboratory specimens in order to investigate one of several model parameters to describe cathodic protection of the rear reinforcement of reinforced concrete structures. These investigations are described elsewhere, [1]. The paper focuses on long termA joint research project was accomplished by ibac and BAM with the aim to develop a numerical model of cathodic protection (CP) of reinforced concrete with a special focus on CP of the rear reinforcement layer. The model was intended to include the effects of chemical alterations within the concrete and the steel concrete interface, which are induced by long-term application of CP. The investigations presented in this paper focus on the migration of chloride ions due to small electric fields as applied during cathodic protection of steel in reinforced concrete structures and its impact on polarisation characteristics. A comparatively new method, laser induced breakdown spectroscopy (LIBS), was used to determine chloride profiles on laboratory specimens in order to investigate one of several model parameters to describe cathodic protection of the rear reinforcement of reinforced concrete structures. These investigations are described elsewhere, [1]. The paper focuses on long term polarisation tests and their impact on the charge depending cathodic polarisation behaviour of laboratory specimens.zeige mehrzeige weniger

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Metadaten
Autor*innen:Thorsten Eichler, Bernd Isecke, Gerd Wilsch
Persönliche Herausgeber*innen:M.C. Forde
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Structural faults & repair 2012 - 14th International conference and exhibition (Proceedings)
Jahr der Erstveröffentlichung:2012
Herausgeber (Institution):University of Edinburgh
Verlag:Engineering Technics Press
Erste Seite:1
Letzte Seite:6
Freie Schlagwörter:Cathodic protection; Chloride migration; Concrete; Corrosion; Steel in concrete
Veranstaltung:Structural faults & repair 2012 - 14th International conference and exhibition
Veranstaltungsort:Edinburgh, Scotland
Beginndatum der Veranstaltung:2012-07-03
Enddatum der Veranstaltung:2012-07-05
ISBN:0-947664-71-7
Verfügbarkeit des Dokuments:Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
Bibliotheksstandort:Sonderstandort: Publica-Schrank
Datum der Freischaltung:19.02.2016
Referierte Publikation:Nein
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