旧沥青混合料铣刨预处理技术的模拟与优化  

Simulation and Optimization of Milling Pre-treatment Technology for Used Asphalt Mixture

作　　者：李梓豪 宋亮 范晶晶 李晓华 高冲 李建宁 LI Zihao;SONG Liang;FAN Jingjing;LI Xiaohua;GAO Chong;LI Jianning(College of Transportation and Logistics Engineering,Xinjiang Agricultural University,Urumqi Xinjiang 830000,China;Xinjiang Jiaotou Construction Management Co.,Ltd.,Urumqi Xinjiang 830063,China;College of Traffic and Transportation Engineering,East China Jiaotong University,Nanchang Jiangxi 330013;Ningxia Highway Management Center,Yinchuan Ningxia 750001,China)

机构地区：[1]新疆农业大学交通与物流工程学院,新疆乌鲁木齐830000 [2]新疆交投建设管理有限责任公司,新疆乌鲁木齐830063 [3]华东交通大学土木建筑学院,江西南昌330013 [4]宁夏公路管理中心,宁夏银川750001

出　　处：《交通节能与环保》2024年第5期183-187,共5页Transport Energy Conservation & Environmental Protection

摘　　要：为了控制旧沥青混合料铣刨回收过程中材料级配和沥青含量的变异性。通过离散元模拟确定铣刨的关键参数,接着对典型路面结构分层进行现场铣刨试验,分析铣刨参数变化对回收材料级配和沥青含量的影响,最终确定中面层AC-16旧料的铣刨回收工艺。研究结果表明,铣刨速度对回收料的级配和沥青含量有显著影响,适中的铣刨速度能够在破碎和级配细化之间取得平衡,提升材料的再利用质量。This study aims to control the variability of gradation and asphalt content in the milling and recycling process of aged asphalt mixtures.By using discrete element simulation,key milling parameters were identified.Subsequently,field milling tests on layered typical pavement structures were conducted to analyze the impact of milling parameter variations on the gradation and asphalt content of reclaimed materials,ultimately determining the milling recovery process for the intermediate layer(AC-16)of existing pavements.The results indicate that milling speed significantly affects the gradation and asphalt content of the reclaimed material.An optimal milling speed balances particle fragmentation and gradation refinement,enhancing the quality of recycled materials.

关 键 词：旧沥青混合料 预处理技术 离散元 

分 类 号：U416.217[交通运输工程—道路与铁道工程]