摘要
为了研究钢渣集料耐磨性能衰减规律及其机理,使用加速磨光机对2种钢渣集料进行了磨光试验,通过摆式仪测量了不同磨光时间下2种集料的磨光值,分析了其耐磨性能衰减规律;采用激光共聚焦显微镜测量了不同磨光时间下2种钢渣集料表面微观形貌,研究了其微观形貌随磨光时间的变化;利用灰色关联度分析方法,分析了不同磨光时间下钢渣集料微观形貌评价指标与磨光值间的关联度。研究结果表明:随着磨光时间的增加,钢渣集料的磨光值均逐渐下降;钢渣集料的耐磨性与抗滑性取决于其成料方式和加工特性;钢渣集料的磨光值与波峰密度、尖度关联度达到0.75以上,可作为评价钢渣集料耐磨性能的可靠指标,而算数平均高度、最大高度、波峰平均曲率和偏斜度等指标可作为辅助性指标。
In order to study the attenuation law of wear resistance and mechanization of steel slag aggregate,the accelerated polishing machine was used to polish two kinds of steel slag aggregates.Under different polishing time,the polishing values of two kinds of aggregates were measured by pendulum instrument to analyze the attenuation law of wear resistance;The surface micro-morphology was measure by laser confocal microscope to study the change rule of micro-morphology with polishing time;The grey correlation analysis method was used to analyze the correlation between the microscopic morphology evaluation index of steel slag aggregate and the polishing value under different polishing time.The results show that the polishing values of the two steel slag aggregates decrease gradually with the increase of polishing time;The wear resistance and skid resistance of steel slag aggregate depend on the way of material preparation and processing characteristics;The correlation between the polishing value of steel slag aggregate and the peak density and sharpness is above 0.75,which can be used as a reliable index to evaluate the wear resistance.The arithmetic mean height,maximum height,peak mean curvature and skewness can be used as auxiliary indexes.
作者
刘新元
姚腾飞
武旭
刘沛麟
屈上智
Liu Xinyuan;Yao Tengfei;Wu Xu;Liu Peilin;Qu Shangzhi(Gansu Communication Investment Management Co.,Ltd.,Lanzhou 730030,China;Gansu Industry Technology Center of Transportation Construction Materials Research and Application,Lanzhou Jiaotong University,Lanzhou 730070,China;Gansu Province Transportation Planning,Survey&Designing Institute Co.,Ltd.,Lanzhou 730010,China)
出处
《市政技术》
2024年第9期191-197,207,共8页
Journal of Municipal Technology
基金
甘肃省自然科学基金在站博士后专项(23JRRA875)。
关键词
道路工程
钢渣
集料
微观形貌
耐磨性能
规律
road engineering
steel slag
aggregate
micro-morphology
wear resistance
law
