Monitoring of corrosion processes in chloride contaminated mortar by electrochemical measurements and X-ray tomography
- Corrosion of steel reinforcement in concrete exposed to chloride containing
environments is a serious problem in civil engineering practice. Electrochemical
methods, e.g. potential mapping, provide information whether the steel reinforcement
is still passive or depassivation has been initiated. By applying such techniques no
information on the type of corrosion, its extent and distribution of corrosion products
is available. Particular the corrosion progress is a significant problem. Especially in
the case of element corrosion in reinforced concrete structures, the development at
the anode can not be separated into corrosion damage causing by element corrosion
or self-corrosion. Until now also in laboratory tests it is impossible to collect such
information without destroying specimens after electrochemical testing was
performed place. To overcome this problem it was tried to study the steel surface
within the mortar specimens by X-ray tomography (CT). Within the scope ofCorrosion of steel reinforcement in concrete exposed to chloride containing
environments is a serious problem in civil engineering practice. Electrochemical
methods, e.g. potential mapping, provide information whether the steel reinforcement
is still passive or depassivation has been initiated. By applying such techniques no
information on the type of corrosion, its extent and distribution of corrosion products
is available. Particular the corrosion progress is a significant problem. Especially in
the case of element corrosion in reinforced concrete structures, the development at
the anode can not be separated into corrosion damage causing by element corrosion
or self-corrosion. Until now also in laboratory tests it is impossible to collect such
information without destroying specimens after electrochemical testing was
performed place. To overcome this problem it was tried to study the steel surface
within the mortar specimens by X-ray tomography (CT). Within the scope of these
investigations it could be shown, that X-ray tomography is suitable to make corrosion
pits visible which are embedded in a mortar with a cover thickness of about 35 mm.
In this publication the corrosion damage of reinforced steel is documented timedependent
by X-ray tomography.…
Autor*innen: | Jürgen Goebbels, Bernd Isecke, Matthias Beck, Andreas Burkert, Ralph BäßlerORCiD |
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Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Graue Literatur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | EUROCORR 2008 - Managing corrosion for sustainability |
Jahr der Erstveröffentlichung: | 2008 |
Herausgeber (Institution): | European Federation of Corrosion |
Verlag: | DECHEMA |
Verlagsort: | Frankfurt am Main |
Ausgabe/Heft: | 299 |
Erste Seite: | 1 |
Letzte Seite: | 10 |
Freie Schlagwörter: | Concrete parameters; Reinforcement; Self-corrosion; X-ray tomography |
Veranstaltung: | EUROCORR 2008 |
Veranstaltungsort: | Edinburgh, Scotland, UK |
Beginndatum der Veranstaltung: | 2008-09-07 |
Enddatum der Veranstaltung: | 2008-09-11 |
Bemerkung: | Serientitel: EFC-Event – Series title: EFC-Event |
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 |