期刊
NANOTECHNOLOGY
卷 20, 期 44, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/20/44/445501
关键词
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资金
- Northland Advanced Transportation Systems Research Laboratory (NATSRL) of the University of Minnesota Duluth
- ITS of the University of Minnesota
- National Science Foundation of China [CMMI-0856477, 50538020, 50808055]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20070213080]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0856477] Funding Source: National Science Foundation
In this paper, a self-sensing carbon nanotube (CNT)/cement composite is investigated for traffic monitoring. The cement composite is filled with multi-walled carbon nanotubes whose piezoresistive properties enable the detection of mechanical stresses induced by traffic flow. The sensing capability of the self-sensing CNT/cement composite is explored in laboratory tests and road tests. Experimental results show that the fabricated self-sensing CNT/cement composite presents sensitive and stable responses to repeated compressive loadings and impulsive loadings, and has remarkable responses to vehicular loadings. These findings indicate that the self-sensing CNT/cement composite has great potential for traffic monitoring use, such as in traffic flow detection, weigh-in-motion measurement and vehicle speed detection.
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