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《China Journal of Highway and Transport》 2017-10
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Test Method of Level and Distribution of Hot Mixed Asphalt Surface Texture

CHEN De;HAN Sen;LING Cheng;PENG Biao;QI Xiang;School of Civil Engineering,Southwest Jiaotong University;Key Laboratory of High-speed Railway Engineering of Ministry of Education,Southwest Jiaotong University;Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang'an University;School of Highway,Chang'an University;Department of Civil and Environment Engineering,University of Wisconsin-Madison;  
To cover the shortage of the existing test methods of hot mixed asphalt( HMA) surface texture,a new test method of level and distribution characteristics of HMA surface texture was proposed based on image analysis techniques and spectral theories. Firstly,2D image analysis technique was used to identify the HMA surface texture from profile scanning images. Then,macro-texture index( i. e.L_(TX,0. 5-31. 5)),micro-texture index( i. e. L_(TX,0. 13-0. 5)),and surface texture distribution indices( i. e.L_(TX,m)) were derived on the basis of spectral theories. Meanwhile,the test analysis software characterizing the level and distribution of 2D HMA surface texture was developed based on MATLAB,Visual Studio,and Install Shield. Finally,indoor comparison tests were carried out between the new method and the traditional test methods of level and distribution of HMA macro-texture and micro-texture. The results show that there are high correlations between results tested by the new and traditional methods of level and distribution of HMA macro-texture and micro-texture. It demonstrates that by dint of this method,the level and distribution characteristics of macro-texture and micro-texture of HMA surface can be accurately evaluated.
【Fund】: 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)
【CateGory Index】: U414
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