TY - GEN A1 - Goebbels, Jürgen A1 - Beck, Matthias A1 - Isecke, Bernd A1 - Burkert, Andreas A1 - Bäßler, Ralph ED - Castro-Borges, P. ED - Moreno, E.I. ED - Sakai, K. ED - Gjorv, O.E. ED - Banthia, N. T1 - Self-corrosion of steel in concrete by electrochemical measurements and X-ray tomography T2 - CONSEC`10 - Concrete under severe conditions - Environment and loading (Proceedings) T2 - CONSEC`10 - 6th International conference on concrete under severe conditions CY - Mérida, Yucatán, Mexico DA - 2010-06-07 KW - Self-corrosion KW - Steel KW - Concrete KW - X-ray tomography PY - 2010 SN - 978-0-415-59316-8 VL - 2 SP - 1221 EP - 1228 PB - Taylor & Francis CY - London, UK AN - OPUS4-22299 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sarmiento Klapper, Helmuth A1 - Bäßler, Ralph A1 - Burkert, Andreas T1 - Recent progress in the qualification of materials used in geothermal energy conversion systems T2 - 1st International conference on materials for energy T2 - 1st International conference on materials for energy CY - Karlsruhe, Germany DA - 2010-07-04 KW - Korrosion KW - Geothermie KW - CrNi-Stahl KW - Ni-Basislegierung KW - Duplexstahl PY - 2010 SN - 978-3-89746-117-8 SP - 158 EP - 159 AN - OPUS4-21676 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Beck, Matthias A1 - Goebbels, Jürgen A1 - Burkert, Andreas A1 - Isecke, Bernd A1 - Bäßler, Ralph T1 - Monitoring of corrosion processes in chloride contaminated mortar by electrochemical measurements and X-ray tomography JF - Materials and corrosion N2 - 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 macrocell corrosion in reinforced concrete structures, the development at the anode cannot be separated into corrosion damage resulting from macrocell 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. 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 and their development visible which are embedded in a mortar with a cover thickness of about 35 mm. In this publication the time-dependent corrosion damage of reinforced steel is documented by X-ray tomography. KW - Self-corrosion KW - X-ray tomography KW - Concrete parameters KW - Contaminated mortar KW - Electrochemical measurements KW - Pitting corrosion PY - 2010 DO - https://doi.org/10.1002/maco.200905364 SN - 0947-5117 SN - 1521-4176 VL - 61 IS - 6 SP - 475 EP - 479 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-22848 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Bäßler, Ralph A1 - Sarmiento Klapper, Helmuth A1 - Burkert, Andreas T1 - Alternative, nachhaltige Energiekonzepte - Herausforderungen für Werkstoffe zum Einsatz in Geothermieanlagen T2 - 3-Länder-Korrosionstagung - Nichtrostende Stähle - Spezielle Anwendungen und angepasste Lösungen T2 - 3-Länder-Korrosionstagung - Nichtrostende Stähle - Spezielle Anwendungen und angepasste Lösungen CY - Berlin, Deutschland DA - 2010-04-19 KW - Hochlegierter Stahl KW - Geothermie KW - Örtliche Korrosion KW - Klassische Auslagerung KW - Elektrochemie PY - 2010 SN - 978-3-935406-40-6 SP - 1 EP - 10(?) PB - DECHEMA AN - OPUS4-21190 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -