Abstract
To address the poor performance of plant-produced hot recycled asphalt mixtures with high recycled asphalt pavement (RAP) content, this study employed a refined separation technology to treat RAP materials. The effectiveness of this technology in enhancing the durability of high-RAP-content recycled asphalt mixtures was verified through trial pavement construction and performance testing. In addition, the carbon reduction potential as well as the economic and social benefits of the refined separation technology were analyzed. The results demonstrate that the refined-separation recycled asphalt mixture performs significantly better than conventional crushed-and-screened recycled asphalt mixtures in terms of water-temperature cycling resistance, long-term aging resistance, high-temperature and moisture damage resistance, and fatigue resistance, while exhibiting comparable durability to virgin asphalt mixtures. From an economic and social perspective, the total cost of refined-separation recycled asphalt pavement decreases by 33% and 50% compared to conventional crushed-and-screened recycled asphalt pavement and virgin asphalt pavement, respectively. Furthermore, its energy consumption and carbon emissions decrease by 25% and 32% compared to virgin asphalt pavement, and by 25% and 24% compared to conventional crushed-and-screened recycled asphalt pavement. This technology not only achieves significant energy conservation and emission reduction but also substantially enhances the durability of high-RAP-content recycled asphalt pavements.
Publication Date
10-27-2025
DOI
10.14048/j.issn.1671-2579.2025.05.018
First Page
166
Last Page
173
Submission Date
November 2025
Recommended Citation
Dongying, ZHANG; Ning, LI; Xincheng, LIU; Mingfeng, LIU; and Tangfei, XIE
(2025)
"Effects of RAP Pretreatment Methods on Durability and Carbon Reduction in High-Proportion Plant-Produced Hot-Recycled Asphalt Mixtures,"
Journal of China & Foreign Highway: Vol. 45:
Iss.
5, Article 18.
DOI: 10.14048/j.issn.1671-2579.2025.05.018
Available at:
https://zwgl1980.csust.edu.cn/journal/vol45/iss5/18
Reference
[1]交通运输部.2024年交通行业发展统计 [N].中国交通报,2025 -06-12(002).Ministry of Transport the People's Republic of China.2024 statistical bulletin on the development of the transport industry [N].China Transportation News,2025 -06-12(002).
[2]黄晓明,赵永利.沥青路面再生利用理论与实践 [M].北京:科学出版社,2014.HUANG Xiaoming,ZHAO Yongli.Theory and practice of asphalt pavement recycling [M].Beijing:Science Press,2014.
[3]汪小东.厂拌热再生沥青路面应用研究 [J].公路,2018,63(12):274-277.WANG Xiaodong.Study on application of plant-mixed hot recycled asphalt pavement [J].Highway,2018,63(12):274-277.
[4]马辉,茅荃,李宁.沥青路面厂拌热再生 RAP料掺量影响因素分析 [J].重庆交通大学学报 (自然科学版),2020,39(9):97-104.MA Hui,MAO Quan,LI Ning.Influence factors of RAP content in plant-mixed hot recycling asphalt pavement [J].Journal of Chongqing Jiaotong University (Natural Science),2020,39(9):97-104.
[5]任瑞波,尹利洋,徐强,等.RAP掺量对温再生沥青混合料力学性能和路用性能的影响规律研究 [J].中外公路,2024,44(1):66-75.REN Ruibo,YIN Liyang,XU Qiang,et al.Influence of RAP content on mechanical properties and pavement performance of warm recycled asphalt mixture [J].Journal of China & Foreign Highway,2024,44(1):66-75.
[6]孙良钰,王盟,张喜伦,等.高RAP掺量沥青混合料疲劳预估模型研究 [J].中外公路,2022,42(3):195-201.SUN Liangyu,WANG Meng,ZHANG Xilun,et al.Study on fatigue prediction model of asphalt mixture with high RAP content [J].Journal of China & Foreign Highway,2022,42(3):195-201.
[7]余晖,郑炳锋,黄毅,等.泡沫温拌再生沥青混合料力学性能研究 [J].中外公路,2021,41(4):277-281.YU Hui,ZHENG Bingfeng,HUANG Yi,et al.Research on mechanical property of foamed warm mix asphalt containing RAP [J].Journal of China & Foreign Highway,2021,41(4):277-281.
[8]宋承哲,李家全,孔靖勋,等.含混凝土再生骨料水泥稳定基层性能综述 [J].中外公路,2025,45(1):88-99.SONG Chengzhe,LI Jiaquan,KONG Jingxun,et al.A review of performance of cement-stabilized base materials containing recycled concrete aggregate [J].Journal of China & Foreign Highway,2025,45(1):88-99.
[9]邹晓勇,李宁,吴闻秀,等.基于红外光谱的 RAP老化沥青转移率研究 [J].中外公路,2024,44(1):88-94.ZOU Xiaoyong,LI Ning,WU Wenxiu,et al.Study on mobilization rate of RAP aged asphalt based on FTIR [J].Journal of China & Foreign Highway,2024,44(1):88-94.
[10]FENG D C,CAO J W,GAO L B,et al.Recent developments in asphalt-aggregate separation technology for reclaimed asphalt pavement [J].Journal of Road Engineering,2022,2(4):332-347.
[11]李万峰.沥青混合料分离再生技术研究 [J].山东交通科技,2011 (1):48-50.LI Wanfeng.Research on the separation regeneration technological of asphalt mixture [J].Shandong Jiaotong Keji,2011 (1):48-50.
[12]赵建国.旧沥青混合料分离再生技术研究 [J].交通世界,2009 (11):238-239.ZHAO Jianguo.Study on separation and regeneration technology of old asphalt mixture [J].Transpoworld,2009(11):238-239.
[13]徐希娟,周新锋.废旧沥青混合料分离再生技术应用研究[C]// 南京：2014年全国公路养护技术学术年会,2015.XU Xijuan,ZHOU Xinfeng.Applied research on separation and recycling technology for waste asphalt mixture [C]//Nanjing:The 2014 National Academic Conference on Highway Maintenance Technology,2015.
[14]冯德成,易军艳,曹继伟,等.沥青路面固废资源化利用 [J].中国公路,2023 (22):68-71.FENG Decheng,YI Junyan,CAO Jiwei,et al.Resource utilization of solid waste from asphalt pavement [J].China Highway,2023 (22):68-71.
[15]ZHAN H,LI N,TANG W,et al.Impact of RAP classification on the road performance variability of recycled mixture [M].Functional Pavements.Boca Raton:CRC Press,2020:146-151.
[16]交通运输部公路科学研究院.公路工程沥青及沥青混合料试验规程:JTG E 20—2011 [S].北京:人民交通出版社,2011.Research Institute of Highway Ministry of Transport.Standard test methods of bitumen and bituminous mixtures for highway engineering:JTG E 20—2011 [S].Beijing:China Communications Press,2011.
[17]HARVEY J,KENDALL A,SANTERO N,et al.Pavement life cycle assessment workshop,may 5–7,2010 in Davis,California,USA [J].The International Journal of Life Cycle Assessment,2011,16(9):944-946.
[18]YU B,LU Q,XU J.An improved pavement maintenance optimization methodology:Integrating LCA and LCCA [J].Transportation Research Part A:Policy and Practice,2013,55:1-11.
[19]任勇.基于生命周期费用的沥青路面预防性养护时机研究[D].西安:长安大学,2006.REN Yong.Research on preventive maintenance timing for asphalt pavement based on life-cycle cost analysis [D].Xi’an:Chang’an University,2006.
[20]张慧丽,黄晓明,窦慧娟.路面设计全寿命周期费用分析(LCCA)的基本原理研究 [J].交通科技与经济,2006,8(5):8-10.ZHANG Huili,HUANG Xiaoming,DOU Huijuan.The principle of life-circle cost analysis in pavement design [J].Technology & Economy in Areas of Communications,2006,8(5):8-10.
[21]王兆仑,宁金成,栗威.冷拌再生沥青混合料能耗与碳排放量分析 [J].公路,2021,66(5):263-268.WANG Zhaolun,NING Jincheng,LI Wei.Analysis of energy consumption and carbon emissions of cold mix recycled asphalt mixture [J].Highway,2021,66(5):263-268.
[22]交通运输部路网监测与应急处置中心.公路工程机械台班费用定额:JTG/T B 06-03—2007 [S].北京:人民交通出版社,2008.Highway Monitoring & Response Center,Ministry of Transport of the People's Republic of China.Highway engineering machinery shift fee quota:JTG/T B 06-03—2007 [S].Beijing:China Communications Press,2008.