High-Modulus Asphalt Mixtures with High RAP Content

Authors

HUANG You, Engineering Research Center of Catastrophic Prophylaxis and Treatment of Road & Traffic Safety of Ministry of Education, Changsha University of Science & Technology, Changsha, Hunan 410114, China ;School of Transportation, Changsha University of Science & Technology, Changsha, Hunan 410114, ChinaFollow
FENG Boxiong, School of Transportation, Changsha University of Science & Technology, Changsha, Hunan 410114, China
LIU Zhaohui, School of Transportation, Changsha University of Science & Technology, Changsha, Hunan 410114, China
WANG Shuai, Hunan Provincial Expressway Group Co ., Ltd., Changsha, Hunan 410026, China
XIONG Tianle, School of Transportation, Changsha University of Science & Technology, Changsha, Hunan 410114, China

Abstract

The old asphalt mixtures are characterized by high hardness and fine aggregate, which is aligned with the characteristics of high-modulus asphalt mixtures. In view of the current problem that the utilization rate of recycled asphalt pavement (RAP) is generally low, research on high-modulus asphalt mixtures with high RAP content was carried out. Three kinds of asphalt mixtures were prepared, including RAP addition with the content of 0%, 30%, 50% and 70% respectively, the addition of the high-modulus agent (2% asphalt mixture mass), and the addition of both RAP and the high-modulus agent with low content (1% asphalt mixture mass). Comparative experimental studies were conducted on the dynamic modulus, road performance, and fatigue performance. The results show that the dynamic modulus of asphalt mixtures increases with the rising RAP content, with mixtures containing 70% RAP meeting the dynamic modulus requirement for high-modulus asphalt mixtures (10 Hz, 15°C, |E*| > 14,000 MPa). This enhancement for the dynamic modulus is comparable to the addition of the 2% high-modulus agent. Asphalt mixtures with 50% RAP content also satisfy the dynamic modulus requirement for high-modulus asphalt mixtures when a small amount (1%) of the high-modulus agent is added. Additionally, the increase in RAP content improves the high-temperature performance of the asphalt mixtures, and significantly increases the shear strength. However, low-temperature performance and fatigue performance are adversely affected. The research results can promote the recycling of asphalt pavement materials and the development of green maintenance technology.

Publication Date

10-27-2025

DOI

10.14048/j.issn.1671-2579.2025.05.014

First Page

131

Last Page

140

Submission Date

November 2025

Recommended Citation

You, HUANG; Boxiong, FENG; Zhaohui, LIU; Shuai, WANG; and Tianle, XIONG (2025) "High-Modulus Asphalt Mixtures with High RAP Content," Journal of China & Foreign Highway: Vol. 45: Iss. 5, Article 14.
DOI: 10.14048/j.issn.1671-2579.2025.05.014
Available at: https://zwgl1980.csust.edu.cn/journal/vol45/iss5/14

Reference

[1]交通运输部.2023年交通运输行业发展统计公报 [N].中国交通报,2024 -06-18(002).Ministry of Transport of the People's Republic of China.2023 statistical bulletin on the development of the transportation industry [N].China Transportation News,2024 -06-18(002).
[2]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.
[3]ZAUMANIS M,ARRAIGADA M,POULIKAKOS L D.100% recycled high-modulus asphalt concrete mixture design and validation using vehicle simulator [J].Construction and Building Materials,2020,260:119891.
[4]王智超,胡槟,沈明燕,等.基于路用性能的热再生沥青混合料 RAP掺量研究 [J].公路交通科技,2024,41(1):10-17.WANG Zhichao,HU Bin,SHEN Mingyan,et al.Study on RAP content of hot recycled asphalt mixture based on road performance [J].Journal of Highway and Transportation Research and Development,2024,41(1):10-17.
[5]王争愿,李九苏,娄梦雷,等.RAP掺量对反应型冷拌再生沥青混合料性能的影响 [J].长沙理工大学学报 (自然科学版),2019,16(4):35-41.WANG Zhengyuan,LI Jiusu,LOU Menglei,et al.Effect of RAP contents on performance of reactive cold mix recycled asphalt mixture [J].Journal of Changsha University of Science & Technology (Natural Science),2019,16(4):35-41.
[6]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.
[7]左锋,叶奋,宋卿卿.RAP掺量对再生沥青混合料路用性能影响 [J].吉林大学学报 (工学版),2020,50(4):1403 -1410.ZUO Feng,YE Fen,SONG Qingqing.Influence of RAP content on road performance of recycled asphalt mixture[J].Journal of Jilin University (Engineering and Technology Edition),2020,50(4):1403 -1410.
[8]张琛,张翔.低温地区橡胶热再生沥青混合料的参数优化及其工作性 [J].公路工程,2020,45(1):67-73.ZHANG Chen,ZHANG Xiang.Parameter optimization of rubber hot recycled asphalt mixture and the workability study in low temperature regions [J].Highway Engineering,2020,45(1):67-73.
[9]李浩,熊鑫,李俊.不同 RAP掺量 SMA再生沥青混合料性能试验分析 [J].中外公路,2022,42(2):242-246.LI Hao,XIONG Xin,LI Jun.Experimental study on pavement performance for SMA recyling asphalt mixture with different RAP content [J].Journal of China & Foreign Highway,2022,42(2):242-246.
[10]王杰,秦永春,黄颂昌,等.沥青混合料回收料变异性 [J].北京工业大学学报,2018,44(2):244-250.WANG Jie,QIN Yongchun,HUANG Songchang,et al.Variability of reclaimed asphalt pavement [J].Journal of Beijing University of Technology,2018,44(2):244-250.
[11]ZHANG J Z,ZHANG X M,LIANG M,et al.Influence of different rejuvenating agents on rheological behavior and dynamic response of recycled asphalt mixtures incorporating 60% RAP dosage [J].Construction and Building Materials,2020,238:117778.
[12]李雪连,许杰,朱硕,等.高RAP掺量温拌再生沥青混合料制备工艺 [J/OL].交通科学与工程,1-11[2023 -06-28].https://link.cnki.net/doi/ 10.16544 /j.cnki.cn43-1494 /U.20230628003.LI Xuelian,XU Jie,ZHU Shuo,et al.Preparation process of warm mix asphalt mixtures with high contents of reclaimed asphalt pavement [J/OL].Journal of Transport Science and Engineering,1-11[2023 -06-28].https://link.cnki.net/doi/ 10.16544 /j.cnki.cn43-1494 /U.20230628003.
[13]王朝辉,舒诚,韩冰,等.高模量沥青混凝土研究进展 [J].长安大学学报 (自然科学版),2020,40(1):1-15.WANG Chaohui,SHU Cheng,HAN Bing,et al.Research progress of high modulus asphalt concrete [J].Journal of Chang’an University (Natural Science Edition),2020,40(1):1-15.
[14]周庆华,沙爱民,杨琴.高模量沥青混凝土力学性能试验研究 [J].郑州大学学报 (工学版),2008,29(1):128-131.ZHOU Qinghua,SHA Aimin,YANG Qin.Experimental study for mechanical property of high modulus asphalt concrete [J].Journal of Zhengzhou University (Engineering Science),2008,29(1):128-131.
[15]XU X Q,LU G L,YANG J,et al.Mechanism and rheological properties of high-modulus asphalt [J].Advances in Materials Science and Engineering,2020,2020 (1):8795429.
[16]ZHANG H W,YANG X W,LI Y,et al.Laboratory evaluation of dynamic characteristics of a new high-modulus asphalt mixture [J].Sustainability,2022,14(19):11838.
[17]郭寅川,张争明,邵东野,等.高模量天然沥青混合料设计及路用性能对比研究 [J].硅酸盐通报,2021,40(8):2811 -2821.GUO Yinchuan,ZHANG Zhengming,SHAO Dongye,et al.Design and road performance of high modulus natural asphalt mixture [J].Bulletin of the Chinese Ceramic Society,2021,40(8):2811 -2821.
[18]卢桂林,许新权,唐志赟,等.高模量改性剂的作用机理及应用研究 [J].建筑材料学报,2021,24(2):355-361.LU Guilin,XU Xinquan,TANG Zhiyun,et al.Mechanism and application of high modulus agent [J].Journal of Building Materials,2021,24(2):355-361.
[19]夏全平,高江平,罗浩原,等.用于高模量沥青砼的复合改性硬质沥青低温性能 [J].吉林大学学报 (工学版),2022,52(3):541-549.XIA Quanping,GAO Jiangping,LUO Haoyuan,et al.Low-temperature performance of composite modified hard asphalt used in high modulus asphalt concrete [J].Journal of Jilin University (Engineering and Technology Edition),2022,52(3):541-549.
[20]李九苏,保安青,姜舜君.超高模量沥青混凝土的制备与路用性能研究 [J].交通科学与工程,2023,39(2):8-15.LI Jiusu,BAO Anqing,JIANG Shunjun.Study on preparation and pavement performance of ultra-high modulus asphalt concrete [J].Journal of Transport Science and Engineering,2023,39(2):8-15.
[21]杨琳.基于低标号沥青与岩沥青掺配技术高模量沥青混合料耐久性试验研究 [J].公路工程,2016,41(4):297-301.YANG Lin.Study on endurable of high modulus asphalt mixture based on low-grade asphalt and rock asphalt blending technology [J].Highway Engineering,2016,41(4):297-301.
[22]张晨晨,潘春梅,孙艺涵,等.胶粉 /SBS复合改性高模量沥青混合料性能研究 [J].中国建材科技,2022,31(6):65-68,33.ZHANG Chenchen,PAN Chunmei,SUN Yihan,et al.Research on properties of high modulus crumb rubber/SBS composite modified asphalt mixture [J].China Building Materials Science & Technology,2022,31(6):65-68,33.
[23]AI X M,CAO J W,FENG D C,et al.Performance evaluation of recycled asphalt mixtures with various percentages of RAP from the rotary decomposition process[J].Construction and Building Materials,2022,321:126406.
[24]ZHANG J Z,GUO C C,CHEN T T,et al.Evaluation on the mechanical performance of recycled asphalt mixtures incorporated with high percentage of RAP and self-developed rejuvenators [J].Construction and Building Materials,2021,269:121337.
[25]SAPKOTA K,YAGHOUBI E,WASANTHA P L P,et al.Mechanical characteristics and durability of HMA made of recycled aggregates [J].Sustainability,2023,15(6):5594.
[26]ZHU J Q,MA T,FAN J W,et al.Experimental study of high modulus asphalt mixture containing reclaimed asphalt pavement [J].Journal of Cleaner Production,2020,263:121447.
[27]费维水,张直云,吴志强,等.再生高模量沥青混合料劲度模量的影响因素研究 [J].公路交通科技,2016,33(4):20-24.FEI Weishui,ZHANG Zhiyun,WU Zhiqiang,et al.Study of factors affecting stiffness modulus of regenerated high modulus asphalt mixture [J].Journal of Highway and Transportation Research and Development,2016,33(4):20-24.
[28]陈健侠,祝谭雍,李伟,等.高模量再生沥青混合料性能研究[J].城市道桥与防洪,2016 (3):169-173, 176, 17.CHEN Jianxia,ZHU Tanyong,LI Wei,et al.Study on performance of high modulus recycle asphalt mixture [J].Urban Roads Bridges & Flood Control,2016 (3):169-173, 176, 17.
[29]交通运输部公路科学研究院 .公路沥青路面再生技术规范:JTG/T 5521—2019 [S].北京:人民交通出版社股份有限公司,2019.Research Institute of Highway Ministry of Transport.Technical specifications for highway asphalt pavement recycling:JTG/T 5521—2019 [S].Beijing:China Communications Press Co.,Ltd.,2019.
[30]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.
[31]HUANG Y,LIU Z H,LIU J Y,et al.Laboratory study on mechanical properties of composite pavement under partial compression-shear load [J].Construction and Building Materials,2022,356:129240.