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Title
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Fiber Bragg grating monitoring system for heavy-duty pavements
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Author
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Abstract
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| Heavy-duty pavements have met new challenges over the past decades. Many pavements were not designed for servicing today's traffic frequency and axle loads, which impose loads much greater than those initially considered. Both factors result in an accelerated deterioration of the pavement structure. The accurate measurement of the strain and stress distributions in pavement is critical for understanding pavement behavior and modeling failures of pavements. With the development of information technology and digitization, traditional pavement monitoring systems have been integrated with other monitoring systems, including bridge monitoring, Weigh-in-Motion (WIM), traffic classification etc. In the present study, a fiber Bragg grating monitoring system for heavy-duty pavement health monitoring is introduced. The concept was designed by University of Antwerp and first installed together with Com&Sens in a test track demonstration project CyPaTs (Cycle Pavement Technologies) in September 2017. The same advanced system is installed in a larger scale project in a test track in the Port of Antwerp in June 2019. Numerous sensors (strain and temperature) installed between three asphalt layers allow better descriptions of the behavior of asphalt layers under heavy loading during real-time monitoring. This technology can provide strain data for the service life of the asphalt layers during a subsequent monitoring campaign under actual moving vehicular load. Since the accuracy is very high, this technology is appropriate for monitoring the deformation of the asphalt layers over time, considering aging, fatigue and rutting. The real-time monitoring data from the FBG sensors embedded in geogrid and three asphalt layers will be discussed in this study. |
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Language
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English
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Source (book)
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Proceedings of the 7th Euroasphalt & Eurobitume congress v1.0, 16th-18th June 2021
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Publication
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2020
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ISBN
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978-90-802884-6-1
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Volume/pages
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(2020)
, p. 1-8
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Full text (publisher's version - intranet only)
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