本文分析了橡胶沥青改性机理,将橡胶沥青改性作用分为性能的发育和衰退2个过程。通过一系列试验,研究了橡胶粉掺量、粒径、搅拌时间、搅拌温度等工艺参数对橡胶沥青性能的影响。研究表明,将橡胶沥青的搅拌温度控制在180～185℃之间,反应时间为45～60min,选用胶粉的粒径范围在0.15～0.60mm,掺量采用18%～20%时,橡胶沥青的综合性能最优。 This paper analyzes the rubber asphalt modification mechanism, the rubber asphalt modification can be divided into performance development and decline of two processes. Through a series of experiments, the influence of rubber powder content, particle size, stirring time, stirring temperature and other process parameters on rubber asphalt properties was studied. The results show that the rubber asphalt is controlled at 180 ~ 185 ℃, the reaction time is 45 ~ 60min, the size of rubber powder is 0.15 ~ 0.60mm, and the content of rubber asphalt is 18 ~ 20% The best overall performance.