Abstract
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.
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This paper is supported by the National Natural Science Foundation of China (Grant Nos. 51308042 and 41372320).
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Qian, Z., Meng, L. Study on micro-texture and skid resistance of aggregate during polishing. Front. Struct. Civ. Eng. 11, 346–352 (2017). https://doi.org/10.1007/s11709-017-0409-7
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DOI: https://doi.org/10.1007/s11709-017-0409-7