采用熔融共混法制备了有机蒙脱土( OMMT) /废胶粉复合改性沥青，通过 X 射线衍射( XRD) 分析和原子力显微镜( AFM) 分析表征了复合改性沥青的微观结构，研究了复合改性沥青的物理性能、抗热氧老化性能和热储存稳定性．结果表明: OMMT 的掺入使废胶粉在沥青中的分散更加均匀，OMMT/废胶粉复合改性沥青形成剥离结构; 与废胶粉改性沥青相比，OMMT/废胶粉复合改性沥青的高温性能得到改善，随着 OMMT 掺量的增加，软化点大幅升高，25℃针入度及5℃延度减小; 与废胶粉改性沥青相比，OMMT/废胶粉复合改性沥青的抗热氧老化性能和热储存稳定性明显提高．

Organic montmorillonite (OMMT) /crumb rubber compound modified asphalt was prepared via melt blending,and the microstructure of the product was characterized and analyzed by means of XRD and AFM.More-over,the physical properties,thermal oxidative aging properties and thermal storage stability of the product were in-vestigated.The results show that (1) the dispersion of crumb rubber in the modified asphalt becomes more uniform and an exfoliated structure forms due to the doping of OMMT; (2) as compared with the crumb rubber modified as-phalt,OMMT/crumb rubber compound modified asphalt is of improved high- temperature performances,for in-stance,with the increase of OMMT dosage,the softening point sharply increases,and the penetration (25℃) and the ductility (5℃) both decrease; and (3) after the doping of OMMT,both the thermal oxidative aging properties and the thermal storage stability of the compound modified asphalt improve significantly.