【摘要】 利用沥青混合料数字图像技术,针对碎石颗粒外观所表现出的轮廓尺寸测定的无标度性和粒径变化所表现出的颗粒间的统计自相似性开展了级配分形特性研究,给出了"小岛法"计算级配颗粒组成的分形维数计算方法,并设计了常见的3种石料4种沥青混合料级配进行试验分析。试验结果表明,采用"小岛法"可以定量描述集料颗粒级配组成的分形特性,不同级配具有不同的分维值,其结果为大于1的数。更多还原

【Abstract】 The digital image processing of asphalt mixture was applied to studying the gradation fractal characteristics aiming at the nonscale characteristics when measuring particles’ sketch and size and the self-similarity characteristics between different particles.Then,the slit island method to calculate fractal dimension of gradation particles was put forward.Three common kinds of stone and four asphalt mixture gradations were designed to analyze the experiments.The experimental results demonstrate that slit island method can be used to quantitatively describe the fractal characteristics of aggregate gradation,that different gradation has different fractal dimension,and that its value is larger than 1.更多还原