| 橡胶颗粒沥青混合料矿料级配的分形评价 |
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| 引用本文： | 张洪伟,高志伟,常明丰,王华晟.橡胶颗粒沥青混合料矿料级配的分形评价[J].武汉理工大学学报,2011(1):82-85,89. |
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| 作者姓名： | 张洪伟 高志伟 常明丰 王华晟 |
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| 作者单位： | 长安大学特殊地区公路工程教育部重点实验室;内蒙古交通设计研究院有限责任公司; |
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| 基金项目： | 陕西省交通科技项目(09-07K) |
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| 摘 要： | 橡胶颗粒沥青混合料集料分布具有明显的分形特征,建立了橡胶颗粒沥青混合料集料体积分形维数与沥青混合料空隙率的回归模型。验证了集料体积参数与混合料空隙率的强相关性,空隙率随着矿料级配分维值D的增加而减小。与橡胶颗粒沥青混合料对应的级配范围集料粒径分维值D范围为2.54～2.59。间断级配JAC-16适用于二重分形评价,采用二重分形计算的相关系数较高,说明该级配的实际组成与级配分形理想模型拟合的程度较高。
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| 关 键 词： | 橡胶颗粒沥青混合料 矿料级配 分形维数 空隙率 二重分形 |
Aggregate Gradation Fractal Characteristic of Crumb Rubber Asphalt Mixtures |
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| ZHANG Hong-wei,GAO Zhi-wei,CHANG Ming-feng,WANG Hua-sheng.Aggregate Gradation Fractal Characteristic of Crumb Rubber Asphalt Mixtures[J].Journal of Wuhan University of Technology,2011(1):82-85,89. |
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| Authors: | ZHANG Hong-wei GAO Zhi-wei CHANG Ming-feng WANG Hua-sheng |
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| Affiliation: | ZHANG Hong-wei1,2,GAO Zhi-wei1,CHANG Ming-feng1,WANG Hua-sheng2(1.Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang'an University,Xi'an 710064,China,2.Inner Mongolia Communications Design and Research Institute,Hohhot 010010,China) |
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| Abstract: | There is aggregate gradation fractal characteristic in crumb rubber asphalt mixtures,A regression model for the fractal dimension of aggregate volume and air void of crumb rubber asphalt mixtures is derived.There is a strong correlation between the fractal dimension of aggregate volume and the air void of asphalt mixtures.With the fractal dimension of volume being increased,the air void of crumb rubber asphalt mixtures is weakened,the ranges of the fractal dimension is 2.54～2.59 corresponding with gradation envelope of crumb rubber asphalt mixtures.The JAC-16 fractal of gap-graded aggregate is two-dimensional.There is a higher correlation coefficient in two-dimensional computation.So the composition of JAC-16 and aggregate gradation fractal characteristic model are fitting. |
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| Keywords: | crumb rubber modified asphalt mixtures mineral aggregate gradation fractal dimension air voids two-dimensional |
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