| 多孔沥青混合料空隙特征与路用性能关系 |
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| 引用本文： | 吴浩,张久鹏,王秉纲.多孔沥青混合料空隙特征与路用性能关系[J].交通运输工程学报,2010(1). |
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| 作者姓名： | 吴浩 张久鹏 王秉纲 |
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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;河南省交通运输厅; |
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| 基金项目： | 国家自然科学基金项目(50608006);;陕西省自然科学基金项目(2007E223);;新世纪优秀人才支持计划项目(NCET-07-0120);;交通部交通应用基础研究项目(2006319812120) |
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| 摘 要： | 以3种级配的OGFC-13马歇尔试件作为载体,运用X-CT技术和数字图像处理技术获取了不同类型混合料试件的内部空隙分布图像,采用分形理论研究了多孔沥青混合料的空隙分维特征,分析了空隙分维特征与混合料路用性能的关系。分析结果表明:多孔沥青混合料的劈裂强度随着空隙率的增加而减少,随着空隙轮廓分形维数的增大而增大;多孔沥青混合料的渗透系数随着空隙率的增加而增加,随着空隙轮廓分形维数的增大而减小。采用空隙轮廓分形维数可以很好地解释多孔沥青混合料孔隙率基本一致但路用性能差异较大的原因,可以用于分析多孔排水沥青混合料的空隙分布及其路用性能变化趋势。
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| 关 键 词： | 路面工程 多孔沥青混合料 分形理论 空隙分布 路用性能 |
Relationship between characteristic of void and road performance of porous asphalt mixture |
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| WU Hao,ZHANG Jiu-peng,WANG Bing-gang.Relationship between characteristic of void and road performance of porous asphalt mixture[J].Journal of Traffic and Transportation Engineering,2010(1). |
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| Authors: | WU Hao ZHANG Jiu-peng WANG Bing-gang |
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| Institution: | 1.Key Laboratory for Special Area Highway Engineering of Ministry of Education/a>;Chang'an University/a>;Xi'an 710064/a>;Shaanxi/a>;China/a>;2.Department of Transportation of Henan Province/a>;Zhengzhou 450052/a>;Henan/a>;China |
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| Abstract: | Three Marshall specimens of OGFC-13 with different gradations were selected,and their internal void distributions were obtained by using X-CT technique and digital graphic processing technique.The fractal characteristics of voids were computed by fractal theory,and the relationship between the void characteristics and the road performances for porous asphalt mixtures were analyzed.It is indicated that the split strength of porous asphalt mixture decreases with the increase of porosity,but increases with the... |
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| Keywords: | pavement engineering porous asphalt mixture fractal theory void distribution road performance |
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