为了系统研究水泥乳化沥青比例(C/A)对复合材料特征和水泥乳化沥青混凝土性能的影响,采用动态剪切流变仪、扫描电镜和力学试验等研究手段对不同C/A时水泥乳化沥青复合材料黏弹性能、微观结构以及其混合料的力学性能进行对比研究。结果表明:水泥乳化沥青复合材料的黏弹性能和微观结构随C/A的变化趋势具有一致性,且在C/A为0.8时,复数模量达到乳化沥青的2.5倍,但相位角接近;同时,水泥与乳化沥青在复合材料体系中形成了一种相互贯穿、多点接触的均质空间网络结构。水泥乳化沥青混合料的抗压强度和抗变形能力较乳化沥青混合料而言有明显提升,且水泥乳化沥青混合料的马歇尔稳定度和抗压强度随C/A的增加而增大、随油石比的增加而降低;在3种油石比和C/A中,以油石比为5%、C/A为1.0的水泥乳化沥青混合料的间接拉伸强度最高。 In order to systematically study the effect of C / A ratio on the properties of composite materials and the properties of cement emulsified asphalt concrete, Viscoelastic properties of composite materials, microstructure and mechanical properties of their mixtures were compared. The results show that the viscoelastic properties and microstructure of cement emulsified asphalt composites are consistent with the change trend of C / A. The complex modulus reaches to 2.5 times that of emulsified asphalt at C / A of 0.8, but the phase angle is close to that of C / A. At the same time, cement and emulsified asphalt form a homogeneous space network structure that penetrates and contacts with each other in the composite system. Compared with emulsified asphalt mixture, the compressive strength and deformation resistance of cement-emulsified asphalt mixture are obviously improved. The Marshall stability and compressive strength of cement-emulsified asphalt mixture increase with the increase of C / A, Than that of the cement emulsified asphalt mixture with the ratio of oil to stone of 5% and C / A of 1.0.