单粒级煅烧铝矾土集料高抗滑表层性能评价  

Performance Evaluation of High Anti-slip Surface Layer of Single Particle Size Calcined Bauxite Aggregate

作　　者：杨发 瞿春璞 YANG Fa;QU Chunpu(Nujiang Beautiful Highway Co.Ltd.,Nujiang of the Lisu Autonomous Prefecture,Nujiang 673100,China)

机构地区：[1]怒江美丽公路股份有限公司,怒江673100

出　　处：《武汉理工大学学报（交通科学与工程版）》2024年第1期158-163,共6页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：云南省交通运输厅科技创新示范项目(2019304)。

摘　　要：试验选取煅烧铝矾土集料不同的撒布量(10,12,14 kg/m^(2)),胶结剂采用环氧树脂,且以沥青混合料与混凝土作为不同的基体,制备了1.18~2.36、2.36~4.75与4.75~9.5 mm三种单粒级的高抗滑表层试件.采用传统铺砂法取了不同基体表面高抗滑表层的构造深度、摆值、平均构造深度(MPD)与均方根高度(Rq)等指标,并得到各指标的三维分布图.同时,通过建立模型探究了高抗滑表层构造深度等指标间的相关性.结果表明:煅烧铝矾土集料路用性能显著优于普通集料.当环氧树脂用量为1.5 L/m^(3),煅烧铝矾土集料粒径选择为2.36~4.75 mm,且撒布量为12 kg/m^(2)时,单粒级高抗滑表层具有优异的抗滑性能.同时,高抗滑表层各评价指标之间具有良好的相关性.In the experiment,three kinds of high anti-sliding surface specimens with single particle size of 1.18~2.36,2.36~4.75 and 4.75~9.5 mm were prepared by selecting different spreading amounts of calcined bauxite aggregate(10,12,14 kg/m 2),using epoxy resin as cementing agent and using asphalt mixture and concrete as different substrates.The structural depth,swing value,mean structural depth(MPD)and root mean square height(Rq)of high anti-sliding surface layers on different substrate surfaces were obtained by traditional sand laying method,and the three-dimensional distribution map of each index was obtained.Meanwhile,the correlation between the structural depth of high anti-sliding surface and other indicators was explored by establishing a model.The results show that the road performance of calcined bauxite aggregate is significantly better than that of ordinary aggregate.When the amount of epoxy resin is 1.5 L/m 3,the particle size of calcined bauxite aggregate is 2.36~4.75 mm,and the spreading amount is 12 kg/m 2,the single-particle high anti-sliding surface layer has excellent anti-sliding performance.At the same time,there is a good correlation between the evaluation indexes of high anti-sliding surface layer.

关 键 词：道路工程 高抗滑表层 煅烧铝矾土集料 环氧树脂 摆值 平均构造深度(MPD) 

分 类 号：U416.2[交通运输工程—道路与铁道工程]