华南理工大学学报(自然科学版) ›› 2013, Vol. 41 ›› Issue (2): 88-93.doi: 10.3969/j.issn.1000-565X.2013.02.014

• 交通与运输工程 • 上一篇    下一篇

基于激光和真空镀膜技术的集料细观构造评价

李智1 刘涛1 刘春雷2   

  1. 1.华南理工大学 土木与交通学院,广东 广州 510640;2.郑州大学 力学与工程科学学院,河南 郑州 450001
  • 收稿日期:2012-08-15 修回日期:2012-09-25 出版日期:2013-02-25 发布日期:2013-01-05
  • 通信作者: 李智(1971-),男,博士,副教授,主要从事道路工程材料设计与评价研究. E-mail:lizhi@scut.edu.cn
  • 作者简介:李智(1971-),男,博士,副教授,主要从事道路工程材料设计与评价研究.
  • 基金资助:

    国家自然科学基金重点项目(51038004);广东省交通厅重点工程项目(2009-01-003);华南理工大学中央高校基本科研业务费专项资金资助项目(2009ZM0099)

Microscopic Structure Evaluation of Aggregates Based on Laser Measurement and Vacuum Coating Technology

Li Zhi1 Liu Tao1 Liu Chun-lei2   

  1. 1.School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,Guangdong,China;2.School of Mechanics and Engineering Science,Zhengzhou University,Zhengzhou 450001, Henan,China
  • Received:2012-08-15 Revised:2012-09-25 Online:2013-02-25 Published:2013-01-05
  • Contact: 李智(1971-),男,博士,副教授,主要从事道路工程材料设计与评价研究. E-mail:lizhi@scut.edu.cn
  • About author:李智(1971-),男,博士,副教授,主要从事道路工程材料设计与评价研究.
  • Supported by:

    国家自然科学基金重点项目(51038004);广东省交通厅重点工程项目(2009-01-003);华南理工大学中央高校基本科研业务费专项资金资助项目(2009ZM0099)

摘要: 鉴于集料细观构造对沥青路面抗滑性能有着至关重要的影响,选取了4种不同材质的石料,借助自行研发的高精度激光细观构造仪来评价集料表面构造的细观特性,并采用分形理论中的计盒维数法对测量获得的集料纹理曲线进行量化评价.为了消除集料岩性、表观色泽及微观晶体组成等因素的影响,提高分形维数试验的测量精度,提出并实施了真空镀膜技术.结果表明,采用计盒维数法可以较好地描述不同集料细观构造的差异,利用真空镀膜技术可以显著提高试验结果的测量精度.

关键词: 沥青路面, 集料, 细观构造, 分形维数, 真空镀膜

Abstract:

The microscopic structure of aggregates is of crucial importance to the skid resistance of asphalt pavement.In this paper,the microscopic structures of four kinds of aggregated rocks with different materials were evaluated by using a serf-developed high-accuracy laser-texture instrument,and the aggregate texture curve was quantitatively evaluated with the box-counting dimension method.Then, the vacuum coating technique was adopted to eliminatethe effects of aggregate lithology,surface color and microscopic crystal and to improve the measurement accuracv of fractal dimension.The results show that the box-counting dimension method can effectively describe the micro-rexture of different aggregates,and that the vacuum coating technique can remarkably improve the measurement accuIlacv.

Key words: asphalt pavement, aggregate, microscopic structure, fractal dimension, vacuum coating

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