利用数字图像技术获取沥青混合料内部结构组成，分析体积参数，进而完成沥青混合料的计算机辅助设计的研究已成为沥青路面技术领域的热点．文中重点介绍了笔者及所在团队基于二维数字图像技术的沥青混合料体积组成的统计学研究、沥青混合料数字图像技术中差异性物质的辨识方法、基于数字图像处理技术的粗集料形态特征的提取和沥青混合料内部结构组成的三维图像重构及虚拟力学试验等方面的研究进展．同时介绍了这些研究成果在工业中应用的实例．

For asphalt mixtures,the digital image technology has been used to obtain the internal structure,analyze the volume parameters and complete the computer-assisted design. These aspects have been hot research topics in the asphalt pavement technology area. In this paper,the relevant research results achieved by the author and his team are introduced,focusing on: ( 1) the statistics of the volumetric component of asphalt mixtures,the identification of the different components of asphalt mixtures and the extraction of the morphological characteristics of coarse aggregates,which are all based on the 2D digital image technology; ( 2) the 3D reconstruction of the internal structure of asphalt mixtures; and ( 3) the virtual mechanics test method. Meanwhile,the cases for the industrial applications of these research results are presented.