沥青混合料表面构造水平及分布特性测试方法

发布时间：2018-04-30 08:26

本文选题：道路工程 + 沥青混合料　；参考：《中国公路学报》2017年10期

【摘要】：为了弥补现有沥青混合料表面构造测试方法的不足,运用数字图像处理技术及频谱分析理论,提出了新型沥青混合料表面构造水平及分布特性测试方法。首先,运用二维数字图像处理技术从沥青混合料断面扫描数字图像中识取出混合料二维表面构造线;然后依据频谱分析理论,提出了表征沥青混合料表面宏观、微观构造水平评价指标L_(TX,0.5-31.5)和L_(TX,0.13-0.5)及表面构造分布特性评价指标L_(TX,m)。同时基于MATLAB,Visual Studio及Install Shield编程平台,开发了沥青混合料二维表面构造水平及分布特性测试分析软件。最后,分别将该方法与传统路面表面宏观、微观构造水平及其分布特性测试方法进行了室内对比测试试验。研究结果表明:该新型沥青混合料表面构造水平及分布特性测试方法,与传统路面表面宏观、微观构造水平及其分布特性测试方法所测结果之间具有良好的相关性,可准确测得沥青混合料表面宏观、微观构造水平及其表面构造分布特性。
[Abstract]:In order to make up for the deficiency of the existing testing methods of asphalt mixture surface structure, a new testing method of surface structure level and distribution characteristics of asphalt mixture is put forward by using digital image processing technology and spectrum analysis theory. Firstly, the two-dimensional surface structure line of asphalt mixture is extracted from the scanning digital image of asphalt mixture section by using two-dimensional digital image processing technology, and then, according to the theory of spectrum analysis, the macroscopic representation of asphalt mixture surface is proposed. The evaluation indexes of microstructural level, L _ S _ T _ X _ (0.5-31.5) and L _ S _ I _ X _ X _ (0.13-0.5), and the evaluation index of the distribution of surface structure, L _ (+ +) _ T _ X _ (0.5-31.5). At the same time, based on MATLAB Visual Studio and Install Shield programming platform, the software for testing and analyzing the horizontal and distribution characteristics of two-dimensional surface structure of asphalt mixture is developed. Finally, the method is compared with the traditional pavement surface macro and micro structure level and its distribution characteristics. The results show that the new testing method of surface structure level and distribution characteristics of asphalt mixture has a good correlation with the results of traditional pavement surface macro and micro structure level and its distribution characteristics test method. The macroscopic and microscopic structure level of asphalt mixture surface and its surface structure distribution characteristics can be accurately measured.
【作者单位】：西南交通大学土木工程学院;西南交通大学高速铁路线路工程教育部重点实验室;长安大学特殊地区公路工程教育部重点实验室;长安大学公路学院;威斯康辛大学麦迪逊分校土木与环境工程系;
【基金】：国家自然科学基金项目(51578076) 中央高校基本科研业务费科技创新项目(2682016CX009) 中央高校基本科研业务费专项资金项目(310821171103)
【分类号】：U414

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