利用单因素实验与正交实验研究了焦炭末、碳纤维及氯化镁对导电砂浆电阻率和结构的影响。实验结果表明,砂浆电阻率随焦炭末、碳纤维及氯化镁加量的增大而减小。采用导电物质碳纤维为0.5%,焦炭末为14%,氯化镁为3%的优选配比,电阻率能达到75Ω.cm,通电发热对导电砂浆的力学性能及内部结构没有影响。 The effects of coke powder, carbon fiber and magnesium chloride on the resistivity and structure of conductive mortar were studied by single factor experiment and orthogonal experiment. The experimental results show that the resistivity of mortar decreases with the increase of the amount of coke, carbon fiber and magnesium chloride. Conductive carbon fiber is 0.5%, 14% of the coke, magnesium chloride is 3% of the preferred ratio, the resistivity can reach 75Ω.cm, the conduction heat on the mechanical properties of conductive mortar and the internal structure has no effect.