Sage Journals: Discover world-class research

Abstract

Carbon fiber/sulfoaluminate cement composites (CFSC) were prepared by pressing technology; the influence of forming pressure on piezo-resistivity and temperature-resistivity effects of CFSC were studied. The studied results indicate that CFSC has good piezo-resistivity effect when the forming pressure is 7 MPa as well as 10 MPa. With the forming pressure rising, the porosity of CFSC decreases and its resistivity value decreases also. The relationship between the resistivity of CFSC and temperature could be described by a linear equation. Based on this linear equation, the surrounding temperature could be figured out if the resistivity of CFSC is already known. However, the forming pressure has no influence on the slope of this linear equation. The curves of the equations of the samples prepared under different forming pressure are parallel with each other. Only the value of the equation curve is different.

Keywords

carbon fiber sulfoaluminate cement piezo-resistivity effect forming pressure.

Get full access to this article

View all access options for this article.

References

Huang Shifeng , Xu Ronghua and Liu Futian (2003). The Development and Application of the Cement Matrix Function Composites, Silicate Aviso, 4: 58—63.

Sihai Wen and Chuang, D.D.L. (2001). Carbon Fiber-reinforced Cement as a Strain-sensing Coating, Cement and Concrete Research , 31: 665—667.

Yunsheng Xu and Chuang, D.D.L. (2001). Silane-treated Carbon Fiber for Reinforcing Cement, Carbon, 39: 1995—2001.

Sihai Wen and Chung, D.D.L. (2001). Uniaxial Compression in Carbon Fiber-reinforced Cement, Sensed by Electrical Resistivity Measurement in Longitudinal and Transverse Directions, Cement and Concrete Research, 31(2): 297—301.

Dragos-Marian and Chung, D.D.L. (2000). Damage in Carbon Fiber-reinforced Concrete, Monitored by Electrical Resistance Measurement, Cement and Concrete Research, 30(4): 651—659.

Sihai Wen and Chuang, D.D.L. (2001). Carbon Fiber-reinforced Cement as a Strain-sensing Coating, Cement and Concrete Research , 31: 665—667.

Sihai Wen and Chuang, D.D.L. (2001). Electrical Behavior of Cement-based Junctions Including the Pn-junction, Cement and Concrete Research, 31: 129—133.

Wang Yanmu , Su Muzhen and Zhang Liang (1999). Sulphoaluminate Cement, P. 12, Beijing Industry College Publishing Company, Beijing.

Wang Shoude , Huang Shifeng , Chen Wen and Cheng Xin. (2005). Smart Properties of Carbon Fiber Reinforced Sulphoalu-minate Cement, Acta Material Composite Silica, 22(6): 114—119.

The Influence of Forming Pressure on Piezo-resistivity and Temperature-resistivity Effects of CFSC

Abstract

Keywords

Get full access to this article

References