|
| 摘要: |
| 为了分析和利用骨架密实型沥青混合料集料分形特征,基于分形几何的基本理论,推导出了集料的质量分布分形几何模型,并以SMA-16混合料为例,探讨了集料分维值(D)的最小计算粒径;结合SMA-16混合料体积参数的测试结果,研究了分形维数与体积参数的关系.结果表明:对于SMA-16混合料,分维值的最小计算粒径为0.6 mm;规范级配范围对应的分维值为2.355～2.457;分维值越大,混合料级配越细;分维值与空隙率、矿料间隙率、沥青饱和度等混合料体积参数有很好的线性相关性. |
| 关键词: 道路工程 分形维数 沥青混合料 骨架密实结构 最小计算粒径 体积参数 |
| DOI： |
| 分类号:U414 |
| 基金项目:国家西部交通科技建设项目? |
|
| Aggregate Fractal Characteristic of Asphalt Mixtures with Skeleton Dense Structure |
|
LI Bo HAN Sen LIU Ya-min ZHANG Hong-wei GAO Wei
|
| Abstract: |
| In order to analyze and utilize aggregate fractal characteristics of asphalt mixtures with skeleton dense structure,the fractal formula of mass distribution was deduced based on the fractal geometry theory.Taking SMA-16 mixture as an example,the minimal particle size for the fractal dimension(D) calculation was discussed and the relationship between D and volume parameter was researched based on testing volume parameter of SMA-16 mixture.The results show that the minimal calculation particle size is 0.6 mm;... |
| Key words: road engineering fractal dimension asphalt mixture skeleton dense structure minimal calculation particle size volume parameter |
