期刊论文

Research on Aggregate Surface Texture Index based on Digital Image Technology

中文

公路

0451-0712

2019

64

7

252-260

国家自然基金面上项目,项目编号51878075 广西科技技术创新引导专项类项目,项目编号桂科AC16380111 广西自然科学基金项目面上项目,项目编号2015GXNSFAA139046.

本校为第一机构

为了分析集料表面微观纹理对沥青混凝土路面长期抗滑能力的影响,采用AIMS系统研究了不同类型集料在洛杉矶磨耗作用后的表面纹理指数指标及其衰减规律.结果 表明,检测集料表面纹理指数能够快速准确地获得集料的微观纹理性质,对不同类型和来源的集料具有很好的区分性.集料的纹理指数与路面长期摩擦力之间的相关性很好,集料的纹理指数在洛杉矶磨耗作用下的衰变趋势与路面摩擦力的长期变化趋势一致,即磨耗初期呈快速下降趋势,但在磨耗时长大于60 min后趋于稳定,符合指数函数T(t)=a+b×e-ct的关系,a+b(集料纹理指数初始值)、a(集料纹理指数最终值)、c(纹理指数衰减速率)3个参数可作为评价集料抗磨耗性...

In order to analyze the effect of aggregate surface micro-texture on long-term anti-skid performance of asphalt pavement,the surface texture indexes and attenuation laws of different aggregates after wearing in Los Angeles are studied by using AIMS system.The results show that testing aggregate surface texture index can obtain the surface micro-texture properties of aggregates quickly and accurately and has a good distinction for aggregates of different types and sources.The correlation between aggregate texture index and long-term pavement fri...