KSCE Journal of Civil Engineering

, Volume 23, Issue 4, pp 1707–1716 | Cite as

Effect of Temperature on Resistivity of CFRP Materials with Added Carbon Powder or Nano-silica

  • Dan Liu
  • Jie YinEmail author
  • Rong-gui Liu
  • Shu Ping
  • Hui-guang Yin
  • Gui-hua Xie
Structural Engineering


This paper presents an experimental investigation on the effect of temperature on resistivity of Carbon Fiber Reinforced Polymer (CFRP) materials. A series of tests were conducted on three types of CFRP materials, namely pure CFRP material, CFRP with carbon powder (4% in weight) and CFRP with nano-silica (4% in weight). Test results showed that adding carbon powder into the epoxy resin decreases the initial electric resistance R0 and initial volume resistivity ρ0 while adding nano-silica increases R0 and ρ0 compared to pure CFRP material. Preheating cycle test results showed that the volume resistivity of all three types of specimens linearly increases with increasing temperature. CFRP with added nano-silica exhibits higher temperature sensitivity than CFRP with added carbon powder compared to the lowest temperature sensitivity for pure CFRP material. In addition, temperature cycle test results showed that CFRP specimens have approximately stable values of volume resistivity. Both CFRP specimens with added carbon powder or nano-silica exhibit a recognizable trend of first decrease and then increase in volume resistivity with increasing temperature both during heating and cooling cycles. CFRP with added carbon powder mainly shows Negative Temperature Coefficient (NTC) effect in the temperature range of −40 to 40°C and Positive Temperature Coefficient (PTC) effect from 40 to 80°C. CFRP with added nano-silica mainly exhibits PTC effect in the temperature domain of −15 to 80°C and NTC effect from −40 to −15°C. A mathematical-physical model with respect to the thermal effect was presented based on the Eshelby-Mori-Tanaka (EMT) approach and mesomechanics method. The results obtained with the model agree well with the test results considering the temperature domain of PTC effect, which indicates that the proposed model is effective in characterizing the variation of fractional change in resistance (ΔR/R0) at varying temperature.


CFRP carbon powder nano-silica volume resistivity temperature 


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Copyright information

© Korean Society of Civil Engineers 2019

Authors and Affiliations

  • Dan Liu
    • 1
  • Jie Yin
    • 1
    Email author
  • Rong-gui Liu
    • 1
  • Shu Ping
    • 1
  • Hui-guang Yin
    • 2
  • Gui-hua Xie
    • 1
  1. 1.Faculty of Civil Engineering and MechanicsJiangsu UniversityZhenjiangChina
  2. 2.School of Civil EngineeringXuzhou Institute of TechnologyXuzhouChina

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