Suitability of embedded RFID-sensors for concrete bridge structures
- RFID (radio-frequency identification) is the wireless non-contact use of radio-frequency electromagnetic fields to transfer data for automatically identifying and tracking tags attached to objects and is well developed and known in commercial use. This technology is by all means promising to be used within a monitoring System enabling a condition assessment for concrete bridge structures. The aim of the presented project, which was funded and supervised by the German Federal Highway Research Institute (BASt), was to investigate modular RFID-based sensor Systems with respect to their basic suitability for the use in concrete (bridge) structures. The selected RFID tags have a sensor interface to be connected to sensors with low power consumption. The measured values of the embedded sensors can then be read wirelessly. After a literature and product research, the project focused on basic investigations, such as
• the selection of suitable sensors for humidity, temperature and corrosionRFID (radio-frequency identification) is the wireless non-contact use of radio-frequency electromagnetic fields to transfer data for automatically identifying and tracking tags attached to objects and is well developed and known in commercial use. This technology is by all means promising to be used within a monitoring System enabling a condition assessment for concrete bridge structures. The aim of the presented project, which was funded and supervised by the German Federal Highway Research Institute (BASt), was to investigate modular RFID-based sensor Systems with respect to their basic suitability for the use in concrete (bridge) structures. The selected RFID tags have a sensor interface to be connected to sensors with low power consumption. The measured values of the embedded sensors can then be read wirelessly. After a literature and product research, the project focused on basic investigations, such as
• the selection of suitable sensors for humidity, temperature and corrosion activity,
• the application of the sensors to reinforced concrete structures and
• the determination of the maximum distance (cover), at which an RFID sensor tag can still be discovered and delivers correct data.
For this purpose, prototypes or RFID sensor tags were developed, assembled, encapsulated and embedded in concrete specimen.
Measurements in climate chambers were carried out and showed useful results. The ränge measurement has shown that an effective ränge of up to 170 mm is reachable with the developed RFID UHF System in the undisturbed case. In addition, the developed RFID sensors were successfully embedded in a reinforced concrete slab with properties of a typical bridge superstructure. The laboratory experiments have confirmed the basic functional efficiency and reliability of the developed sensor System. Since the demand for embedded sensors in civil engineering is increasing, other measuring principles as a Supplement to or a combination with the developed System are being investigated.…


| Autor*innen: | Markus Stoppel, A. Fakhouri |
|---|---|
| Persönliche Herausgeber*innen: | M. Grantham, P. A. M. Basheer, B. Magee, M. Soutsos |
| Dokumenttyp: | Beitrag zu einem Tagungsband |
| Veröffentlichungsform: | Verlagsliteratur |
| Sprache: | Englisch |
| Titel des übergeordneten Werkes (Englisch): | Concrete Solutions 2014 (Proceedings) |
| Jahr der Erstveröffentlichung: | 2014 |
| Verlag: | CRC Press |
| Erste Seite: | 1 |
| Letzte Seite: | 6(?) |
| Freie Schlagwörter: | Corrosion; Embedded sensors; Moisture measurement; NDT; RFID |
| Veranstaltung: | Concrete Solutions 2014 |
| Veranstaltungsort: | Belfast, UK |
| Beginndatum der Veranstaltung: | 01.09.2014 |
| Enddatum der Veranstaltung: | 03.09.2014 |
| ISBN: | 978-1-138-02708-4 |
| Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
| Datum der Freischaltung: | 20.02.2016 |
| Referierte Publikation: | Nein |

