研究了脱油沥青(De-oiled asphalt)基气相生长碳纤维(VGCFs)增强水泥基复合材料的制备方法及其性能。以脱油沥青作原料,采用化学气相沉积法(CVD)制备出气相生长碳纤维,以此纤维制备水泥基功能复合材料。结果表明:低含量VGCFs的碳纤维增强水泥基复合材料具有良好的抗压强度和导电性能,在VGCFs的掺量由0增至0.6%范围内,随着VGCFs掺量的增加,碳纤维增强水泥基复合材料的电阻率下降,抗压强度提高。当VGCFs为0.4%时,VGCFs水泥基复合材料电阻率降低2个数量级,从3.25×105Ω.cm降为1.49×103Ω.cm,抗压强度提高28.8%,为最佳掺量。 The preparation and properties of De-oiled asphalt-based VGCFs reinforced cement-based composites were studied. Using deoiled asphalt as raw material, vapor-grown carbon fibers were prepared by chemical vapor deposition (CVD), and the fibers were used to prepare cement-based functional composites. The results show that the carbon fiber reinforced cement-based composites with low content of VGCFs have good compressive strength and electrical conductivity. When the content of VGCFs increases from 0 to 0.6%, with the increase of the content of VGCFs, the carbon fiber reinforced cement-based composites The resistivity of the material decreases and the compressive strength increases. When VGCFs is 0.4%, the electrical resistivity of VGCFs cement-based composites decreases by two orders of magnitude from 3.25 × 105Ω.cm to 1.49 × 103Ω.cm, and the compressive strength increases by 28.8%, which is the best dosage.