Northland Advanced Transportation Systems Research Laboratories
نویسنده
چکیده
Traffic flow sensors are import devices to provide inputs for traffic management applications. This NATRL seed project explores the piezoresistive property of the CNT/cement composite and its feasibility as an embedded stress sensor for to detect traffic flow. 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 two 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.
منابع مشابه
Transportation Data Research Laboratory : Data Acquisition and Archiving of Large Scaled Transportation Data , Analysis Tool Developments , and On - Line Data Support Final
The contents of this report reflect the views of the authors, who are responsible for the facts and the accuracy of the information presented herein. This document is disseminated under the sponsorship of the Department of Transportation University Transportation Centers Program, in the interest of information exchange. The U.S. Government assumes no liability for the contents or use thereof. T...
متن کاملHua Tang Seed NATSRL_final_report
Acknowledgements The author is very grateful to Northland Advanced Transportation System Research Laboratory (NATSRL) for supporting this project. The author would like to thank Dr. Taek Kwon for his very valuable suggestions and discussions. The author also thanks to Dr. Eil Kwon for his discussion and review of the project.
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