Nondestructive evaluation of concrete linings at Hanging Lake tunnel
- Tunnel lining evaluation is performed in the Hanging Lake Tunnel near Glenwood Springs, Colorado, using variations of four nondestructive evaluation (NDE) methods: air- and ground-coupled ground penetrating radar (GPR), ultrasonic echo (US echo), ultrasonic tomography (UST), and impact echo (IE). Potential regions of interest are identified using high-speed air-coupled GPR and visual inspection. A robotic frame with pneumatically-operated vacuum plates was used to automate the ground-coupled GPR, US echo, and IE tests, while the UST technique was used manually. This study shows that a particular combination of NDE techniques is a powerful tool for assessing the condition of tunnel linings and can detect potential anomalies such as delamination, depth of surface cracks, reinforcement depth and layout, and lining thickness. By mapping the phase shift of the ultrasonic pulses at detected interface, the potential bonding of layer interfaces and reinforcement is assessed.
Autor*innen: | J. White, Julia Wolf, Parisa Shokouhi, S. Hurlebaus, Andrew Wimsatt |
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Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Graue Literatur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | TRB 92nd Annual meeting |
Jahr der Erstveröffentlichung: | 2013 |
Herausgeber (Institution): | Transportation Research Board (TRB) of the National Academies |
Erste Seite: | 1 |
Letzte Seite: | 16 |
Freie Schlagwörter: | Concrete; GPR; Impact echo; Nondestructive evaluation; Ultrasonic |
Veranstaltung: | TRB 92nd Annual meeting |
Veranstaltungsort: | Washington, D.C., USA |
Beginndatum der Veranstaltung: | 13.01.2013 |
Enddatum der Veranstaltung: | 17.01.2013 |
URL: | http://trid.trb.org/view.aspx?id=1241994 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 20.02.2016 |
Referierte Publikation: | Nein |