沥青路面薄层环氧铺装材料抗滑性能衰变规律  

Attenuation Rule of Skid Resistance of Thin Epoxy Paving Material for Asphalt Pavement

作　　者：谭祺琦 朱洪洲[1,2] 代思 马涛[3] 葛琦 TAN Qi-qi;ZHU Hong-zhou;DAI Si;MA Tao;GE Qi(School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China;National and Local Joint Engineering Research Center for Transport and Civil Engineering Materials,Chongqing Jiaotong University,Chongqing 400074,China;School of Transportation,Southeast University,Nanjing Jiangsu 210096,China;Huai’an Urban Development and Construction Co.,Ltd.,Huai’an Jiangsu 223000,China)

机构地区：[1]重庆交通大学土木工程学院,重庆400074 [2]重庆交通大学交通土建工程材料国家地方联合工程研究中心,重庆400074 [3]东南大学交通学院,江苏南京210096 [4]淮安市城市开发建设有限公司,江苏淮安223000

出　　处：《公路交通科技》2023年第9期18-26,共9页Journal of Highway and Transportation Research and Development

基　　金：重庆市研究生科研创新项目(2020S0012)。

摘　　要：为研究薄层环氧铺装材料路面抗滑性能的衰变规律,采用4种粒径在1~4 mm范围内的骨料颗粒并结合双组份环氧树脂材料组成了抗滑磨耗层。经过10 h的小型加速加载试验后,分析了不同粒径耐磨颗粒、不同岩性抗滑骨料及不同施工工艺条件下薄层抗滑性能的衰变规律。利用数学模型对摩擦系数和构造深度值进行了拟合与回归分析,通过分析数学模型中参数a的绝对值得到了对环氧树脂薄层抗滑耐久性能影响程度最大的关键因素。最后提出了基于荷载作用次数和抗滑指标的稳态方程及抗滑衰变通用模型。结果表明:抗滑骨料粒径越大,薄层的抗滑性能越好;选择玄武岩或辉绿岩作为骨料的薄层,其抗滑能力的综合表现好于金刚砂和陶瓷颗粒;在单层砂浆涂抹工艺下制作成型的薄层试件其抗滑性能衰减幅度虽然不大,但由于抗滑骨料与黏结剂混合搅拌后导致薄层表面的抗滑性能下降,综合来看,在双层铺洒工艺下制作成型的薄层试件其抗滑性能最好;不同岩性的骨料对薄层抗滑耐久性能的影响程度最大,其次是不同施工工艺,而粒径大小的影响程度最小;该稳态方程能够缩短40%左右的测试时间,显著提高了试验效率。所提出的抗滑衰变通用模型能够为相关实际工程案例中抗滑耐久性能的预测提供参考。In order to study the attenuation rule of skid resistance of thin epoxy pavement materials,the antiskid wear layer is formed by 4 kinds of aggregate particles with sizes ranging from 1 mm to 4 mm combined with two-component epoxy resin material.After 10 h small-scale accelerated loading test,the attenuation rules of skid resistance of the thin layer with different sizes of wear-resistant particles,different lithology of anti-skid aggregates and different construction conditions are analyzed.By analyzing the absolute value of parameter a in the mathematical model,the key factors that have the greatest influence on the anti-skid durability of the epoxy resin thin layer are obtained.Finally,a steady-state equation based on number of loadings and the general model of skid resistance attenuation are proposed.The result shows that(1)The larger the particle size of the anti-skid aggregate,the better the skid resistance of the thin layer.(2)The comprehensive performance of the anti-skid ability of the thin layer with basalt or diabase as aggregate is better than that with diamond sand and ceramic particles.(3)Although the skid resistance attenuation of the thin layer specimens made under the single-layer mortar coating technique is not significant,the skid resistance of the thin layer surface decreases due to the mixing of the anti-skid aggregate and binder.Overall,the thin layer specimens made under the double-layer coating technique have the best skid resistance.(4)The aggregates with different lithology have the greatest influence on the skid resistance durability of thin layer,and followed by different construction techniques,the influence of particle size is the smallest.(5)The steady-state equation can shorten the testing time by about 40%,significantly improving the testing efficiency.The proposed general model of skid resistance attenuation can provide reference for the skid resistance durability in practical engineering cases.

关 键 词：道路工程 抗滑衰变通用模型 试验研究 小型加速加载 薄层环氧铺装材料 抗滑性能 稳态方程 

分 类 号：U416.217[交通运输工程—道路与铁道工程]