In order to optimize carbon fiber-steel fiber-graphite conductive concrete composition ratio of the three-conductive material, through experiment, the effects of three graphite materials content and fineness on concrete compres-sive strength and electrical conductivity are studied in this paper, and through Grey analysis of the three materials, signifi-cant degree of influence on conductivity is derived. The results show that the greater the carbon fiber content, the better the performance of concrete conductivity, when the carbon fiber content greater than 0.8%, the resistivity tends to be sta-ble, while the carbon fiber content of 0.4%, the maximum intensity, initially identified carbon fiber content is 0.4%; loga-rithmically content varies between resistivity and carbon fiber. The longer the curing period, the worse conductivity, and when the age of more than 21d, the conductive properties are stabilized. The finer the graphite particles, the lower the con-crete strength, and the better the electrical conductivity, in which the graphite fineness of 400 mesh and 600 mesh, the conductive properties are extremely close. As the graphite content increases, the compressive strength and electrical resis-tivity decreases, when the graphite content exceeds 8%, the conductivity is stabilized. Comprehensive determining carbon fiber, steel fiber and graphite content with 0.5%, 0.8% and 5%, the best performance concrete conductivity and high strength can be obtained, and a significant degree of three-conductive material on conductive property effects of concrete is:carbon fiber﹥graphite﹥steel fiber.%为优化碳纤维-钢纤维-石墨三相导电混凝土中三种导电材料的组成比例，试验研究了三种材料掺量以及石墨细度对混凝土抗压强度和导电性能的影响，并通过灰关联分析得出三种材料对导电性能影响的显著程度。结果表明，碳纤维掺量越大，混凝土导电性能越好，当碳纤维掺量大于0.8%时，电阻率趋于稳定，当碳纤维掺量为0.4%时强度最大，初步确定碳纤维掺量为0.4%；电阻率与碳纤维掺量之间呈对数规律变化；养护龄期越长，导电性能越差，当龄期超过21d后，导电性能趋于稳定；石墨颗粒越细混凝土强度越低，导电性能越好，其中石墨细度为400目和600目时导电性能极为接近；随着石墨掺量的增大，抗压强度和电阻率逐渐减小，当石墨掺量超过8%时，导电性能趋于稳定。综合确定碳纤维、钢纤维和石墨掺量分别为0.5%、0.8%和5%时，混凝土导电性能最好，同时具有较高的强度；三种导电材料对混凝土导电性能影响的显著程度是：碳纤维＞石墨＞钢纤维。
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