Durability of Functionalized Carbon Structures with Optical Fiber Sensors in a Highly Alkaline Concrete Environment
- verfasst von
- Kort Bremer, Lourdes S.M. Alwis, Yulong Zheng, Frank Weigand, Michael Kuhne, Reinhard Helbig, Bernhard Roth
- Abstract
The paper presents an investigation into the durability of functionalized carbon structures (FCS) in a highly alkaline concrete environment. First, the suitability of optical fibers with different coatings-i.e., acrylate, polyimide, or carbon-for the FCS was investigated by subjecting fibers with different coatings to micro/macro bending and a 5% sodium hydroxide (NaOH) (pH 14) solution. Then, the complete FCS was also subjected to a 5% NaOH solution. Finally, the effects of spatial variation of the fiber embedded in the FCS and the bonding strength between the fiber and FCS was evaluated using different configurations -i.e., fiber integrated into FCS in a straight line and/or with offsets. All three coatings passed the micro/macro bending tests and show degradation after alkaline exposure, with the carbon coating showing least degradation. The FCS showed relative stability after exposure to 5% NaOH. The optimum bonding length between the optical fiber and the carbon filament was found to be ≥ 150 mm for adequate sensitivity.
- Organisationseinheit(en)
-
Hannoversches Zentrum für Optische Technologien (HOT)
PhoenixD: Simulation, Fabrikation und Anwendung optischer Systeme
- Externe Organisation(en)
-
Napier University
Sächsisches Textilforschungsinstitut e. V.
Bauhaus-Universität Weimar
- Typ
- Artikel
- Journal
- Applied Sciences (Switzerland)
- Band
- 9
- Anzahl der Seiten
- 10
- ISSN
- 2076-3417
- Publikationsdatum
- 02.06.2019
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.), Instrumentierung, Ingenieurwesen (insg.), Prozesschemie und -technologie, Angewandte Informatik, Fließ- und Transferprozesse von Flüssigkeiten
- Elektronische Version(en)
-
https://doi.org/10.3390/app9122476 (Zugang:
Offen)
https://doi.org/10.15488/5223 (Zugang: Offen)
