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Accession Number
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PB2012-114249
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Title
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Intelligent Pavement for Traffic Flow Detection: Phase I.
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Publication Date
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Sep 2012
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Media Count
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27p
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Personal Author
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X. Yu
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Abstract
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This project explored a new approach in detecting vehicles on a roadway by making a roadway section itself a traffic flow detector. Sections of a given roadway are paved with carbon-nanotube (CNT)/cement composites; the piezoresitive property of carbon nanotubes enables the composite to detect the traffic flow. Meanwhile, CNTs can also work as the reinforcement elements to improve the strength and toughness of the concrete pavement. In contrast to current traffic flow detection technologies that require separate devices to be installed either in the pavement or over the road, the proposed sensing approach enables the pavement itself to detect traffic flow parameters. Therefore, the proposed sensor is expected to have a long service life with little maintenance and wide-area detection capability.
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Keywords
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Carbon nanotube
Concrete pavements
Pavements
Piezoresistivity
Resistivity method
Strength
Toughness
Traffic flow
Vehicle detectors
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Source Agency
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Department of Transportation Office of University Research
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NTIS Subject Category
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91B - Transportation & Traffic Planning
43G - Transportation
85H - Road Transportation
50A - Highway Engineering
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Corporate Author
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Minnesota Univ.-Duluth. Dept. of Mechanical and Industrial Engineering.
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Document Type
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Technical report
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Title Note
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N/A
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NTIS Issue Number
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1225
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Contract Number
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CTS 2009006
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