Study on micro-texture and skid resistance of aggregate during polishing

The skid resistance performance of pavement is closely related to the micro-texture of pavement aggregate, while there is very few research on the relationship between micro-texture and the skid resistance. In this paper, the optical microscope is used to acquire the surface morphology of three type...

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Bibliographic Details
Published inFrontiers of Structural and Civil Engineering Vol. 11; no. 3; pp. 346 - 352
Main Authors Qian, Zhenyu, Meng, Lingjian
Format Journal Article
LanguageEnglish
Published Beijing Higher Education Press 01.09.2017
Springer Nature B.V
Subjects
Aggregates
Basalt
Cities
Civil Engineering
Computer simulation
Correlation analysis
Countries
Curvature
Engineering
Equipment acquisition planning
Indicators
Kurtosis
Limestone
Microtexture
Polishing
Regions
Regression analysis
Research Article
Roads & highways
Sandstone
Skid resistance
Stone
Surface layers
光学显微镜
多项式回归模型
微观结构特征
抗滑性能
抛光效果
纹理信息
表面形貌测量
集料
micro-texture
skid resistance of pavement
aggregates
polishing test
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Summary:The skid resistance performance of pavement is closely related to the micro-texture of pavement aggregate, while there is very few research on the relationship between micro-texture and the skid resistance. In this paper, the optical microscope is used to acquire the surface morphology of three types of aggregates including basalt, limestone and red sandstone respectively, where a total of 12 indicators are developed based on the surface texture information. The polishing effect on aggregate is simulated by Wehner/Schulze （W/S） device, during the polishing procedure, the skid resistance are measured by British Pendulum Tester （BPT）. Based on the results of independent T-test and the polishing resistance analysis, it shows that the surface texture of basalt is significantly different between limestone and red sandstone. Three indicators including the average roughness （Ra）, the kurtosis of the surface （Sku） and the mean summit curvature （Ssc） are selected to describe the characteristics of aggregate micro-texture based on the correlation analysis. The contribution of micro-texture to the skid resistance can be described with the secondary polynomial regression model by these indicators.
Bibliography:10-1023/X
skid resistance of pavement, micro-texture, aggregates, polishing test
The skid resistance performance of pavement is closely related to the micro-texture of pavement aggregate, while there is very few research on the relationship between micro-texture and the skid resistance. In this paper, the optical microscope is used to acquire the surface morphology of three types of aggregates including basalt, limestone and red sandstone respectively, where a total of 12 indicators are developed based on the surface texture information. The polishing effect on aggregate is simulated by Wehner/Schulze （W/S） device, during the polishing procedure, the skid resistance are measured by British Pendulum Tester （BPT）. Based on the results of independent T-test and the polishing resistance analysis, it shows that the surface texture of basalt is significantly different between limestone and red sandstone. Three indicators including the average roughness （Ra）, the kurtosis of the surface （Sku） and the mean summit curvature （Ssc） are selected to describe the characteristics of aggregate micro-texture based on the correlation analysis. The contribution of micro-texture to the skid resistance can be described with the secondary polynomial regression model by these indicators.
ISSN:2095-2430
2095-2449
DOI:10.1007/s11709-017-0409-7