长沙理工大学学报（自然科学版）2025，Vol.22Issue(6)：59-73,15.DOI:10.19951/j.cnki.1672-9331.20250905001
加速加载磨耗下沥青混合料表面纹理演变规律
Evolution laws of surface texture for asphalt mixtures under accelerated loading wear
摘要
Abstract
[Purposes]This paper aims to unveil the evolution patterns of asphalt pavement surface texture and skid resistance under vehicular loading.[Methods]The plate specimens of modified asphalt mixture with three typical gradations in the surface layer of AC-13C(continuous gradation),SMA-13(gap gradation),and PA-13(open gradation)were prepared.The small-scale accelerated loading test system was used to simulate the long-term wear effect of driving load on asphalt pavement.The dynamic evolution processes of surface texture and skid resistance for asphalt mixtures were analyzed by using three-dimensional laser scanning technology combined with traditional skid resistance test methods.[Findings]With the increase of wear times,the surface texture parameters such as arithmetic mean height,skewness,kurtosis,root mean square gradient,peak density,reduced peak height,and reduced valley depth show overall downward trends,while the fastest decay autocorrelation length and arithmetic mean peak curvature display upward trends,indicating that the surface texture of asphalt mixtures gradually evolves to homogenization under wheel load wear.Meanwhile,the surface mean texture depth of the asphalt mixtures shows a trend of continuous decelerating decay in the negative exponential function and tends to be stable gradually,while the British pendulum number shows a three-stage change of rapid decay,short-term recovery,and stable decay.The short-term recovery is caused by the surface texture reconstruction due to the wear of the surface asphalt film.The skid resistance durability of the three asphalt mixtures is obviously different,and the long-term skid resistance of SMA-13 is the best.Based on the strong correlation texture parameters including arithmetic mean height,arithmetic mean peak curvature,peak density,and root mean square gradient,the multiple linear regression prediction models for the mean texture depth and the British pendulum number are established.The adjusted determination coefficients are more than 0.8,showing significant correlations.[Conclusions]The research results can provide a reliable reference for the design,construction,maintenance management,and accurate prediction of skid resistance in asphalt pavement.关键词
道路工程/沥青混合料/抗滑性能/表面纹理/预测模型/加速加载Key words
road engineering/asphalt mixture/skid resistance/surface texture/prediction model/accelerated loading分类
交通工程引用本文复制引用
查旭东,赵敖宇,许文辉..加速加载磨耗下沥青混合料表面纹理演变规律[J].长沙理工大学学报（自然科学版）,2025,22(6):59-73,15.基金项目
国家自然科学基金项目(51878077) Project(51878077)supported by National Natural Science Foundation of China （51878077）
