Characteristics of resistivity-temperature for carbon fiber reinforced concrete

Abstract

The resistance response to temperature change of carbon fiber reinforced cementbased composites (CFRC) is reported, which shows some outstanding phenomena of positive temperature coefficient (PTC) of resistance and negative temperature coefficient (NTC) of resistance during the temperature rising. The influences of carbon fiber, cementbased matrix and thermal cycles on the characteristics of temperatureresistivity for the system were also discussed. Because of the special characteristics for temperatureresistivity, carbon fiber cement based composites can be useful in structure with the function of alarm for fire.

Keywords

carbon fiber / composite / temperature-resistivity effect

References

[1] Farhad Reza, Batson Gordon B, Jerry A, Yamauro S Lee Jong. Volume Electrical Resistivity of Carbon Fiber Cement Composites. ACI Materials Journal, 2001, 98(1): 25-34.

[2] Wen Sihai, Chung D D L. Seebeck Effect in Carbon Fiber Reinforced Cement. Cem. Concr. Res., 1999, 29(12): 1989-1993.

[3] Yunsheng Xu, Chung D D L.. Effect of Sand Addition on the Specific Heat and Thermal Conductivity of Cement. Cem. Concr.Res., 2000, 30(1): 59-61.

[4] Xiangcheng Luo, Chung D D L. Concrete-Concrete Pressure Contacts under Dynamic Loading, Studied by Contact Electrical Resistance Measurement. Cem. Concr. Res., 2000, 30(2): 323-326.

[5] Chung D D L. Cement Reinforced with Short Carbon Fibers: a Multifunctional Material. Composites Part B, 2000, 31(6-7): 511-526.

[6] Keru Wu, Bing Chen, Wu Yao. Smart Properties of Carbon Fiber Reinforced Cement Based Composite. Journal of Tongji University, 2002, 30(4): 456-463.

[7] Chen Bing, Wu Yao, Keru Wu. Study on Piezoresistivity of Carbon Fiber Reinforced Cement Based Composites. Journal of Building Materials, 2002, 5(2): 221-229.

[8] Norio Muto, Yanagida Hiroaki, Teruyuki Nakatsuji, Minoru Sugita, Ohtsuka Yasushi. Preventing Fatal Fractures in Carbon-Fiber-Glass-Fiber-Reinforced Plastic Composites by Monitoring Change in Electrical Resistance. J. Am. Ceram. Soc., 1993, 76(4): 875-879.

[9] Reidy R F, Simkovich G. Anomalous Electrical Behavior of Polymer-carbon Composites as a Function of Temperature. Journal of Materials Science, 1993, 28(4): 799-804.

[10] Strumpier Ralf. Polymer Composite Thermistors for Temperature and Current Sensors. J. Appl. Phys., 1996, 80(11): 6091-6096.

[11] Reidy R F, Simkovich G. Anomalous Electrical Behaviour of Polymer-carbon Composites as a Function of Temperature. Journal of Materials Science, 1993, 28: 799-804.