一、引言沥青混合料的性质强烈地受到结合料性质的影响。既然沥青和煤沥青是粘弹性的,因此也给混合料带来这种特性。粘弹性意思是指应力—应变特性将依赖于时间和温度,对沥青材料而言,因为它们在热流变学上是简单的,所以这种性质可看作是通用的。关于这种材料的时间依赖性知识,对于在工程结构中成功使用沥青材料是极重要的。 I. INTRODUCTION The nature of asphalt mixture is strongly influenced by the nature of the binder. Since asphalt and coal tar pitch are viscoelastic, they also bring this property to the mix. Viscoelasticity means that the stress-strain characteristics will depend on time and temperature, and for asphalt materials, this property can be considered as universal because they are thermoextrously simple. Knowledge of the time-dependency of such materials is of paramount importance for the successful use of bituminous materials in engineering structures.