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Performance assessment on degrading concrete structures including considerations on the time variant alteration

 Performance assessment on degrading concrete structures including considerations on the time variant alteration
Auteur(s): , , ORCID
Présenté pendant IABSE Congress: Structural Engineering for Future Societal Needs, Ghent, Belgium, 22-24 September 2021, publié dans , pp. 341-348
DOI: 10.2749/ghent.2021.0341
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The infrastructure of ASFiNAG is mainly built from reinforced and prestressed concrete, which despite all regular maintenance measures, is subject to ageing and degradation. The major degradation p...
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Détails bibliographiques

Auteur(s): (ASFINAG Bau Management GmbH, Vienna, Austria; University of Natural Resources and Life Sciences Institute of Structural Engineering, Vienna, Austria)
(burtscher consulting GmbH, Rocket NG GmbH, Vienna, Austria‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌)
ORCID (University of Natural Resources and Life Sciences Institute of Structural Engineering, Vienna, Austria)
Médium: papier de conférence
Langue(s): anglais
Conférence: IABSE Congress: Structural Engineering for Future Societal Needs, Ghent, Belgium, 22-24 September 2021
Publié dans:
Page(s): 341-348 Nombre total de pages (du PDF): 8
Page(s): 341-348
Nombre total de pages (du PDF): 8
DOI: 10.2749/ghent.2021.0341
Abstrait:

The infrastructure of ASFiNAG is mainly built from reinforced and prestressed concrete, which despite all regular maintenance measures, is subject to ageing and degradation. The major degradation process is chloride attack, followed by carbonation, which both lead to corrosion of the reinforcing steel. In this paper chlorides in the concrete are analysed with a new method, which represents a major improvement over previous assessment. The paper also introduces a new concept for the durability assessment by using objective indicators, like chloride content, electrical resistivity, and corrosion potential. For objectivity and a reliable determination of the condition state, an overall performance index derived from the condition indices using an analytic hierarchy process (AHP) is adopted. The model is applied to excellent and dense data from a monitoring system and investigations taken from reinforced concrete components beside the motorway.

Mots-clé:
structures existantes
Copyright: © 2021 International Association for Bridge and Structural Engineering (IABSE)
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