摘要
集料的抗磨光性能对沥青路面抗滑性能影响显著。在对现有集料磨光试件成型方式进行改进的基础上,采用路面材料加速磨光设备开展集料加速磨光试验研究。改进后的磨光过程与路面实际磨光情况更贴近,对摆式摩擦系数测试结果更稳定、准确,对不同集料抗磨光指标的测试结果区分度更好。通过对集料摆式摩擦系数和三维形貌指标的变化情况进行跟踪观测,结果表明:在条件允许的情况下,应将长期抗滑性能和耐磨性较好的花岗岩、辉绿岩作为抗滑表层集料的首选,玄武岩次之,不应将石灰岩用作抗滑表层集料;可采用峭度初始值进行集料耐磨性的初步判断,采用算术平均高度稳定值和偏斜度稳定值进行集料磨光耐久性的初步判断,采用偏斜度稳定值和峭度稳定值进行集料初始磨光性能的初步判断。
The anti-abrasion performance of aggregates has a significant effect on the anti-skid performance of asphalt pavement.On the basis of improving the existing forming method of aggregate polishing specimens,accelerated aggregate polishing experiments were carried out using accelerated polishing equipment for pavement materials.The improved polishing process is closer to the actual polishing situation of road surface.After the improvement,the test results of the British Pendulum Number are more stable and accurate,and the test results of different aggregate anti-abrasion indicators are better distinguished.The variation of aggregate British Pendulum Number and three-dimensional morphology indexes were tracked and observed,and some conclusions were drawn.If conditions permit,granite and diabase with good long-term skid resistance and wear resistance should be the first choice for anti-skid surface aggregate,followed by basalt,and limestone should not be used.The initial kurtosis value can be used to preliminarily judge the abrasive resistance of aggregates.The arithmetic average height stability value and skewness stability value can be used to preliminarily judge the anti-abrasion durability of aggregate.The skewness stability value and kurtosis stability value can be used to judge the initial anti-abrasion performance of aggregates.
作者
谢兼量
马健萍
李红杰
范倩
肖玉荣
XIE Jianliang;MA Jianping;LI Hongjie;FAN Qian;XIAO Yurong(Poly Changda Engineering Co.,Ltd.,Guangzhou,Guangdong 510620,China;Guangdong Hualu Transport Technology Co.,Ltd.,Guangzhou,Guangdong 510420,China;Guangdong Transportation Science and Technology R&D Co.,Ltd.,Guangzhou,Guangdong 510550,China)
出处
《公路工程》
2023年第5期161-166,共6页
Highway Engineering
基金
广东省省级科技计划项目(2018B020207003)。
关键词
道路工程
集料
加速磨光试验
改进
摆式摩擦系数
三维形貌
road engineering
aggregate
accelerated polishing test
improve
british pendulum number
three-dimensional topography
