An Experimental Study on Electric Resistivity and Exothermic Property of Electrically Conductive Mortar using Amorphous Graphite

흑연을 혼입한 전기전도 모르타르의 전기저항 및 발열특성에 관한 실험적 연구

Ahn, Hong-JIn;Kim, Sang-Heon;Choi, Soo-Kyung

  • Received : 2016.02.24
  • Accepted : 2016.05.25
  • Published : 2016.06.20


The exothermic property of electrical conductivity concrete would allow the heating system of house or snow melting system of tunnel, road or bridge deck. This study was performed on electric resistance, exothermic property and mechanical property of the mortar with graphite of carbon-based conductive material as a fundamental research for the heat conductive concrete development. As the results of this experiment, the increasement on the amorphous graphite substitution rate was found to decrease in the compressive strength, however, the electric resistance was found to be significantly lower. And, in order to demonstrate the exothermic property, the graphite was found to be included more than 15% of the total mortar volume. When low electric resistance obtained with a certain level of the graphite inclusion, exothermic value and applied voltage has a higher correlation, and the exothermic value and the square of the voltage appeared to be in a proportional relationship.


electrically conductivity;amorphous graphite;electric resistivity;exothermic property;mortar


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