引言沥青混合料的特性受非线性响应、应力路径、现存及潜在的各向异性、微裂纹和开裂等一系列因素的影响。这些因素导致沥青混凝土在重复的机械荷载和温度荷载作用下出现性能退化、软化和硬化、性能恢复等现象。永久变形(或车辙)、荷 INTRODUCTION The characteristics of asphalt mixtures are affected by a number of factors, including non-linear response, stress paths, existing and potential anisotropy, microcracking and cracking. These factors lead to asphalt concrete performance degradation, softening and hardening under the repeated mechanical load and temperature load, the performance recovery and so on. Permanent deformation (or rut), Dutch