Taking the PR FLEX 20 high viscosity asphalt mixture additives as an example, this paper introduced the characteristics of high viscos-ity asphalt mixture technology, and system analyzed its application in pavement engineering, in order to effectively improve the road performance of asphalt pavement.%以PR FLEX 20高粘度沥青混合料添加剂为例，介绍了高粘度沥青混合料技术的特性，并对其在路面工程中的应用进行了系统分析，以有效提高沥青路面的使用性能。
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