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多孔沥青混合料空隙特征与路用性能关系

吴浩,  张久鹏,  王秉纲

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文章导航 > 交通运输工程学报  > 2010 >  10(1): 1-5
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, 10(1): 1-5. doi: 10.19818/j.cnki.1671-1637.2010.01.001
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, 10(1): 1-5. doi: 10.19818/j.cnki.1671-1637.2010.01.001
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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, 10(1): 1-5. doi: 10.19818/j.cnki.1671-1637.2010.01.001
Citation: 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, 10(1): 1-5. doi: 10.19818/j.cnki.1671-1637.2010.01.001
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多孔沥青混合料空隙特征与路用性能关系

doi: 10.19818/j.cnki.1671-1637.2010.01.001
  • 1.

    长安大学 特殊地区公路工程教育部重点实验室, 陕西 西安 710064

  • 2.

    河南省交通运输厅, 河南 郑州 450052

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

详细信息
    作者简介:

    吴浩(1973-), 男, 河南南阳人, 河南省交通运输厅高级工程师, 长安大学工学博士研究生, 从事路面结构和材料研究

    王秉纲(1934-), 男, 辽宁朝阳人, 长安大学教授

  • 中图分类号: U414.18

Relationship between characteristic of void and road performance of porous asphalt mixture

  • 1.

    Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China

  • 2.

    Department of Transportation of Henan Province, Zhengzhou 450052, Henan, China

More Information

    摘要
  • 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。

     

    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 increase of the fractal dimension of void profile.The permeation property increases with the increase of porosity, but decreases with the increase of the fractal dimension of void profile.The fractal dimension can explain the reason of the road performance difference for the mixtures with same porosity, so the fractal dimension may be adopted to analyze the void distribution and the changing law of road performance for porous asphalt mixture.

     

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  • 图  1  横断面扫描位置

    Figure  1.  Scan positions of cross sections

    下载: 全尺寸图片 幻灯片

    图  2  截面1空隙特征提取图像

    Figure  2.  Extraction image of void characteristic for section 1

    下载: 全尺寸图片 幻灯片

    图  3  劈裂强度与空隙率关系

    Figure  3.  Relation between split strength and porosity

    下载: 全尺寸图片 幻灯片

    图  4  分形维数与劈裂强度的关系

    Figure  4.  Relation between split strength and fractal dimension

    下载: 全尺寸图片 幻灯片

    图  5  空隙率与渗透系数关系

    Figure  5.  Relation between permeation coefficient and porosity

    下载: 全尺寸图片 幻灯片

    图  6  空隙轮廓分形维数与渗透系数关系

    Figure  6.  Relation between permeation coefficient and fractal dimension of void profile

    下载: 全尺寸图片 幻灯片

    表  1  级配设计

    Table  1.   Gradation design

    级配类型 矿料的筛孔(mm)通过百分率/%
    16 13.2 9.5 4.75 2.36 1.18 0.6 0.3 0.15 0.075
    G1 100.00 96.17 67.32 24.41 11.71 8.02 6.58 5.56 5.12 4.55
    G2 100.00 96.17 67.33 27.08 15.38 9.91 7.56 5.92 5.23 4.58
    G3 100.00 96.17 67.33 29.21 18.32 11.42 8.35 6.20 5.31 4.60
    下载: 导出CSV

    表  2  试件的空隙特征

    Table  2.   Void characteristics of different specimens

    级配类型 试件编号 空隙率/% 空隙轮廓分形维数
    G1 G1-1 25.0 1.098 4
    G2 G2-1 23.7 0.080 5
    G3 G3-1 19.1 1.123 1
    G3-2 18.8 1.124 5
    G3-3 18.9 1.117 6
    下载: 导出CSV

    表  3  试件的劈裂强度

    Table  3.   Split strengthes of different specimens

    级配 试件编号 劈裂强度/MPa
    G1 G1-1 0.738
    G2 G2-1 0.926
    G3 G3-1 1.126
    G3-2 1.140
    G3-3 1.009
    下载: 导出CSV

    表  4  试件的空隙率与渗透系数

    Table  4.   Permeation coefficients and porosities of different specimens

    试件编号 空隙率/% 渗透系数/(10-5 cm·s-1)
    1 13.10 2 984
    2 11.65 1 137
    3 15.44 7 949
    4 18.83 24 525
    5 15.41 6 371
    6 14.81 10 622
    7 14.27 1 746
    8 15.38 8 716
    9 20.01 32 350
    下载: 导出CSV
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