Experimental study on electrical conductivity of carbon nanofiber reinforced concrete

International Conference on Manufacturing Technology, Materials and Chemical Engineering

材料科学;化学工业

Wang, Tengjiao^1 ; Xu, Jinyu^1^2 ; Bai, Erlei^1 ; Chen, Haowen^1 ; Liu, Gaojie^1 ; Chang, Sen^1

Teaching-research Office of Airfield and Building Engineering, Air Force Engineering University, Xi'an

710038, China^1

College of Mechanics and Civil Architecture, Northwest Polytechnic University, Xi'an

710072, China^2

关键词: Concrete age;    Different ages;    Electrical conductivity;    Electrical resistances;    Fiber contents;    Four-electrode method;    Test voltage;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/592/1/012034/pdf
DOI  :  10.1088/1757-899X/592/1/012034

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

To study the effect of carbon nanofibers (CNFs) on the electrical conductivity of concrete, we used the four-electrode method to measure the resistance and resistivity of carbon nanofiber reinforced concrete (CNFRC) under different ages, different fiber content and different test voltages. The results show that the incorporation of CNFs into concrete can improve the electrical conductivity of concrete. The electrical resistance and electrical resistivity of CNFRC increase with the increase of concrete age, but the growth rate decreases gradually. The resistance and electrical resistivity of CNFRC decrease with the increase of carbon nanofiber content and the optimum dosage range is 0.1%-0.3%. The resistance and electrical resistivity of CNFRC decrease with the increase of test voltage, and when the test voltage is 1V∼5V, the resistance and electrical resistivity decrease significantly.