Influence of Water Content on Conductivity and Piezoresistivity of Cement-based Material with both Carbon Fiber and Carbon Black

武汉理工大学学报-材料科学版(英文版), 2010, 25(1): 147-151. doi: 10.1007/s11595-010-1147-z

^1, , ^2, , ^3,

1.School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China

2.School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China

3.School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;School of Civil and Hydraulic Engineering, Dalian University of Technology, Dafian 116024,China

基金项目: the National Natural Science Foundation of China(50238040;50538020) the High-Tech Research and Development Program of China(2002AA335010) the Postdoctoral Science Foundation of China(20060390803)

Influence of Water Content on Conductivity and Piezoresistivity of Cement-based Material with both Carbon Fiber and Carbon Black

HAN Baoguo ^1, , ZHANG Lingyan ^2, , OU Jinping ^3,

1.School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China

2.School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China

3.School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;School of Civil and Hydraulic Engineering, Dalian University of Technology, Dafian 116024,China

Keywords： cement-based material

The influence of water content on the conductivity and piezoresistivity of cement-based material with carbon fiber (CF) and carbon black (CB) was investigated. The piezoresistivity of cement-based material with both CF and CB was compared with that of cement-based material with CF only, and the changes in electrical resistivity of cement-based material with both CF and CB under static and loading conditions in different drying and soaking time were studied. It is found that the piezoresistivity of cement-based material with both CF and CB has better repeatability and linearity than that of cement-based material with CF only. The conductivity and the sensitivity of piezoresistive cement-based material with both CF and CB are enhanced as the water content in piezoresistive cement-based material increases.

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材料期刊网

Influence of Water Content on Conductivity and Piezoresistivity of Cement-based Material with both Carbon Fiber and Carbon Black

参考文献