鉴于集料细观构造对沥青路面抗滑性能有着至关重要的影响，选取了4种不同材质的石料，借助自行研发的高精度激光细观构造仪来评价集料表面构造的细观特性，并采用分形理论中的计盒维数法对测量获得的集料纹理曲线进行量化评价．为了消除集料岩性、表观色泽及微观晶体组成等因素的影响，提高分形维数试验的测量精度，提出并实施了真空镀膜技术．结果表明，采用计盒维数法可以较好地描述不同集料细观构造的差异，利用真空镀膜技术可以显著提高试验结果的测量精度．

The microscopic structure of aggregates is of crucial importance to the skid resistance of asphalt pavement.In this paper,the microscopic structures of four kinds of aggregated rocks with different materials were evaluated by using a serf-developed high-accuracy laser-texture instrument,and the aggregate texture curve was quantitatively evaluated with the box-counting dimension method.Then, the vacuum coating technique was adopted to eliminatethe effects of aggregate lithology,surface color and microscopic crystal and to improve the measurement accuracv of fractal dimension.The results show that the box-counting dimension method can effectively describe the micro-rexture of different aggregates，and that the vacuum coating technique can remarkably improve the measurement accuIlacv.