Veerman, R. P. ; Koenders, E. A. B. (2014)
Changing model properties with time due to corrosion of a dynamically loaded reinforced concrete beam.
1st Ageing of Materials & Structures Conference. Delft, The Netherlands (26.05.2014-28.05.2014)
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
Structural Health Monitoring (SHM) systems are frequently used in civil infrastructures. One important durability property in reinforced concrete (RC) structures is the level of steel bar corrosion. In a dynamic four-point-bending test, two beams are loaded simultaneously, in which corrosion is accelerated in one of them. Since geophones are commonly used in SHM systems to monitor vertical deformations and to calculate modal properties, the first natural frequency of both beams are analysed in this paper. It is discovered that many properties, like temperature and moisture, may influence natural frequencies. Besides this, calculated natural frequencies may fluctuate. Experiments showed that the first natural frequency in the corroded beam decreases while it remains almost constant in the uncorroded situation.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Veerman, R. P. ; Koenders, E. A. B. |
| Art des Eintrags: | Bibliographie |
| Titel: | Changing model properties with time due to corrosion of a dynamically loaded reinforced concrete beam |
| Sprache: | Englisch |
| Publikationsjahr: | Mai 2014 |
| Verlag: | DCMat Ageing Centre, Delft University of Technology |
| Veranstaltungstitel: | 1st Ageing of Materials & Structures Conference |
| Veranstaltungsort: | Delft, The Netherlands |
| Veranstaltungsdatum: | 26.05.2014-28.05.2014 |
| URL / URN: | http://resolver.tudelft.nl/uuid:1bf3dbc5-b798-470d-a68f-720c... |
| Kurzbeschreibung (Abstract): | Structural Health Monitoring (SHM) systems are frequently used in civil infrastructures. One important durability property in reinforced concrete (RC) structures is the level of steel bar corrosion. In a dynamic four-point-bending test, two beams are loaded simultaneously, in which corrosion is accelerated in one of them. Since geophones are commonly used in SHM systems to monitor vertical deformations and to calculate modal properties, the first natural frequency of both beams are analysed in this paper. It is discovered that many properties, like temperature and moisture, may influence natural frequencies. Besides this, calculated natural frequencies may fluctuate. Experiments showed that the first natural frequency in the corroded beam decreases while it remains almost constant in the uncorroded situation. |
| Freie Schlagworte: | chemical degradation, concrete beam, dynamic load, natural frequencies, time dependency |
| Fachbereich(e)/-gebiet(e): | 13 Fachbereich Bau- und Umweltingenieurwissenschaften 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Werkstoffe im Bauwesen |
| Hinterlegungsdatum: | 08 Jun 2015 14:53 |
| Letzte Änderung: | 01 Jun 2016 07:44 |
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