动态硫化EVA/SBS复合改性沥青动态力学性能的研究

研究动态硫化乙烯-乙酸乙烯酯共聚物（EVA）/苯乙烯-丁二烯-苯乙烯嵌段共聚物（SBS）复合改性沥青的动态力学性能，并与基质沥青和SBS改性沥青进行对比。结果表明，与基质沥青和SBS改性沥青相比，EVA/SBS复合改性沥青的复数模量和抗车辙因子明显增大、损耗因子明显减小，说明其高温弹性和高温抗车辙变形能力增强、温敏性显著下降；动态硫化EVA/SBS复合改性沥青的高温弹性、高温抗车辙变形能力和温敏性进一步改善。;The dynamic mechanical properties of EVA/SBS modified asphalt were investigated and compared with those of original asphalt and SBS modified asphalt.The results showed that the complex modulus and rut resistance factor of EVA/SBS modified asphalt increased obviously and tanδ decreased significantly when compared with those of original asphalt and SBS modified asphalt，which indicated the high temperature elasticity and high temperature rut deformation resistance of EVA/SBS modified asphalt were improved and the temperature susceptivity decreased；with dynamic vulcanized EVA/SBS，the high temperature elasticity，high temperature rut deformation resistance and temperature susceptivity of the modified asphalt were further improved