TY - JOUR PY - 2009// TI - A self-sensing carbon nanotube/cement composite for traffic monitoring JO - Nanotechnology A1 - Han, Bing A1 - Yu, Xiaonan A1 - Kwon, Eil SP - 445501 EP - 445501 VL - 20 IS - 44 N2 - 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.

Language: en

LA - en SN - 0957-4484 UR - http://dx.doi.org/10.1088/0957-4484/20/44/445501 ID - ref1 ER -