采用活性乙烯基三元共聚物Elvaloy4170作为一种新的沥青改性剂,研究了其对沥青的结构和性能的影响。荧光显微镜观察表明:Elvaloy4170的加入可显著改善胶粉在沥青中的分散状态;流变测试表明Elvaloy4170的加入可以改善沥青的粘弹性;当沥青、胶粉和Elvaloy4170的质量比为100∶15∶2时,延度由橡胶沥青的12.3cm提高到19.1cm;软化点由59.2℃增加到66℃;储存稳定性测试结果表明:加入Elvaloy4170可显著改善沥青的稳定性。 The active vinyl terpolymer Elvaloy4170 was used as a new asphalt modifier to study its influence on the structure and properties of asphalt. Fluorescence microscopy showed that the addition of Elvaloy  4170 could significantly improve the dispersion of rubber powder in asphalt. Rheological tests showed that the addition of Elvaloy  4170 could improve the viscoelasticity of asphalt. When the mass ratio of asphalt, rubber powder and Elvaloy  4170 Is 100: 15: 2, the ductility increases from 12.3cm of rubber asphalt to 19.1cm, the softening point increases from 59.2 ℃ to 66 ℃. The storage stability test results show that the addition of Elvaloy4170 can significantly improve the stability of asphalt.