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Accession Number PB2012-114249
Title Intelligent Pavement for Traffic Flow Detection: Phase I.
Publication Date Sep 2012
Media Count 27p
Personal Author X. Yu
Abstract 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.
Keywords Carbon nanotube
Concrete pavements
Resistivity method
Traffic flow
Vehicle detectors

Source Agency Department of Transportation Office of University Research
NTIS Subject Category 91B - Transportation & Traffic Planning
43G - Transportation
85H - Road Transportation
50A - Highway Engineering
Corporate Author Minnesota Univ.-Duluth. Dept. of Mechanical and Industrial Engineering.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1225
Contract Number CTS 2009006

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