公路路面乳化沥青冷再生技术综述  

Emulsified Asphalt Cold Recycled Technology for Highway Pavement:a State-of-the-art Review

作　　者：王梦浩 王朝辉[1] 高璇 高峰 肖绪荡 WANG Menghao;WANG Chaohui;GAO Xuan;GAO Feng;XIAO Xudang(School of Highway,Chang’an University,Xi’an 710064,China;CCCC First Highway Consultants Co.,Ltd.,Xi’an 710065,China;Sino Shaanxi Nuclear Health Industry Co.,Ltd.,Xi’an 710100,China)

机构地区：[1]长安大学公路学院,西安710064 [2]中交第一公路勘察设计研究院有限公司,西安710065 [3]中陕核健康产业有限公司,西安710100

出　　处：《材料导报》2023年第7期46-56,共11页Materials Reports

基　　金：陕西省创新能力支撑计划项目(2022TD-07)。

摘　　要：公路路面乳化沥青冷再生混合料作为一种绿色铺面材料,因在延长道路寿命的同时增加了沥青旧料的利用率,逐渐受到关注。近年来,学者们针对如何提升乳化沥青冷再生混合料使用品质进行了深入研究并取得了一定成果。研究成果分为两方面:乳化沥青冷再生混合料配合比设计与优化方法、混合料各项性能改善,这一系列成果使其成功应用于实体工程。研究成果丰硕但较为散乱,尚未汇总并推荐科学合理的乳化沥青冷再生混合料配合比设计方法、等级化评价乳化沥青冷再生混合料力学及路用性能。基于此,梳理评价了乳化沥青冷再生技术相关规范及其技术参数,调查总结了乳化沥青冷再生技术研究动态和实体工程配合比设计、乳化沥青混合料的相关力学性能及路用性能,推荐了混合料配合比设计区间,提出了混合料单项性能划分等级。结果表明:水泥用量、乳化沥青用量、最佳含水率、粒径小于9.5 mm的再生沥青混合料(RAP)掺量、粒径大于9.5 mm的RAP掺量及总RAP掺量的推荐区间分别是1.5%~2.0%、3.2%~4.5%、3.8%~6.5%、28%~49%、38%~58%及79%~98%;对于粗粒式沥青混合料,4.75 mm及以下的筛孔通过百分率低于级配中值,13.2 mm及以上的筛孔通过百分率高于级配中值;根据数据分布特性将混合料单项性能划分为四个等级。As a kind of green road material,emulsified asphalt cold recycled mixture has come to the fore and drawn wide concern because of improving the service life of asphalt pavement and increasing the utilization rate of recycled asphalt mixture.Recently,the researchers have made intensive works to improve the use quality of emulsified asphalt cold recycled mixture and acquired certain achievements.The research results can be classified into the following two aspects:the ratio design and optimization methods of emulsified asphalt cold recycled mixture,and improvement of the mixture’s various properties.These achievements have found remarkable application in practical projects.The research results are rich but scattered.The ratio design of emulsified asphalt methods cold recycled mixture have not been recommended scientifically and reasonably.Moreover,the mechanical properties and road performance of emulsified asphalt cold recycled mixture have not been evaluated hierarchically.Based on this,the relevant specifications and technical parameters of emulsified asphalt cold recycled technology were combed and evaluated.Then,the ratio design,mechanical property,and road performance of emulsified asphalt cold recycled mixtures(including research works andpractical projects)are comprehensively investigated and summarized.After that,the ratio design range is recommended and the classification standard of single performance grade of emulsified asphalt cold recycled mixture is put forward.The results show that the recommended ranges of cement content,emulsified asphalt content,optimum moisture content,RAP content with particle size less than 9.5 mm,RAP content with particle size greater than 9.5 mm,and total RAP content are 1.5%—2.0%,3.2%—4.5%,3.8%—6.5%,28%—49%,38%—58%,and 79%—98%,respectively.For the coarse mineral aggregate of asphalt mixture,the sieve holes passing percentages of particle size with and below 4.75 mm are lower than the median gradation of asphalt mixture,and the sieve holes passing percentages of

关 键 词：道路工程 乳化沥青冷再生技术 配合比设计 力学性能 路用性能 性能等级划分 

分 类 号：U414[交通运输工程—道路与铁道工程]