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Title: Composite of Carbon-Nanotube and Cement with Piezoresistive Property
Accession Number: 01124251
Record Type: Component
Availability: Transportation Research Board Business Office 500 Fifth Street, NW Abstract: This paper studies the piezoresistive property of the CNT/cement composite to explore its feasibility as an embedded stress sensor for civil structures such as roadways, levees and bridges. The experimental results show that the electrical resistance of the CNT/cement composites changes proportionally to the compressive stress levels indicating the potential of using the CNT/cement composite as a stress sensor for civil structures. The piezoresistive responses of composite with different fabrication methods and CNT doping levels were also studied. It is found that the CNT dispersion-assistant surfactant could block the contacts among carbon nanotubes thus impair the piezoresistive response of the composite, while a higher CNT doping level could improve the sensitivity of the composite stress response. Currently, the piezoresistive property of the CNT/cement composite is being applied to develop an in-pavement traffic flow sensor.
Monograph Title: Monograph Accession #: 01120148
Report/Paper Numbers: 09-2692
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Yu, XunKwon, EilPagination: 8p
Publication Date: 2009
Conference:
Transportation Research Board 88th Annual Meeting
Location:
Washington DC, United States Media Type: DVD
Features: Figures; Photos; References
(23)
; Tables
(1)
TRT Terms: Candidate Terms: Uncontrolled Terms: Subject Areas: Bridges and other structures; Highways; Materials; Pavements; I32: Concrete
Source Data: Transportation Research Board Annual Meeting 2009 Paper #09-2692
Files: TRIS, TRB
Created Date: Jan 30 2009 7:03PM
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