【摘要】 基于数字图像处理技术,以直观的沥青混合料体积组成为研究对象开展了沥青混合料的分形特性研究.分析说明了沥青混合料中的集料颗粒、空隙和矿料间隙都具有典型的分形特性,并给出了相应的分形维数计算方法.试验结果表明,采用小岛法可以定量描述集料颗粒和空隙的分形特性,利用计盒维数法能够描述荷载作用下沥青混合料中矿料间隙的分形特性.更多还原

【Abstract】 Based on digital image processing technique,the fractal characteristics of asphalt mixtures with volume composition as research object was studied.The fractal characteristics of aggregate particles,air voids,and voids in mineral aggregates was analyzed,then the calculation method of fractal dimension was put forward.Test results indicate that the slit island method can be used to describe the fractal characteristics of aggregate particles and air voids,the box counting method can be used to describe the fractal characteristics of voids change in mineral aggregates of asphalt mixtures under the effect of loading.更多还原