•  
  •  
 

Corresponding Author

李宁, 男, 博士, 副教授. E-mail: lining24@hhu.edu.cn

Abstract

To enhance the performance of recycled high-elastic modified asphalt binder and achieve high-quality and high-content utilization of RAP fine materials in the design of stress absorbing layers, a highly permeable recycled high-elastic modified asphalt (ZGT-R) was prepared by adding SBS modifier, light component oil, and penetrant to replenish the degraded SBS molecules and reduce intermolecular forces. The conventional properties, elastic recovery, degree of fusion between new and aged asphalt, rheological properties, and micro-modification mechanism of ZGT-R and ordinary recycled high-elastic modified asphalt before and after the addition of the rejuvenator were analyzed. The results show that, compared with the two types of ordinary recycled high-elastic modified asphalt, the penetration and ductility of ZGT-R increase by 51.6% and 22.4%, respectively, and the elastic recovery also improves, demonstrating excellent anti-reflection cracking performance and regeneration effect. The higher viscosity ratio also proves that ZGT-R breaks through the limitation of the degree of fusion between new and aged asphalt. In terms of rheological properties, when the aged asphalt content is between 35% and 55%, ZGT-R exhibits lower temperature sensitivity and stress sensitivity and overall shows better anti-deformation ability. Regarding the micro-modification mechanism, the SBS in ZGT-R exhibits a dense spatial cross-linked network structure, proving the full swelling and diffusion of SBS and providing a new idea for the design of high-elastic modified asphalt for recycled stress absorbing layers.

Publication Date

10-27-2025

DOI

10.14048/j.issn.1671-2579.2025.05.012

First Page

113

Last Page

121

Submission Date

November 2025

Reference

[1]交通运输部.2024年交通运输行业发展统计公报 [N].中国交通报,2025 -06-12(002).Ministry of Transport of 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]沙爱民,胡力群.半刚性基层材料的结构特征 [J].中国公路学报,2008,21(4):1-5,42.SHA Aimin,HU Liqun.Structural characteristics of semi-rigid base course material [J].China Journal of Highway and Transport,2008,21(4):1-5,42.
[3]蔡迎春,谢申健.移动荷载下道路病害的弯沉盆特性 [J].中外公路,2024,44(3):270-281.CAI Yingchun,XIE Shenjian.Deflection basin characteristics of distressed roads under moving load [J].Journal of China & Foreign Highway,2024,44(3):270-281.
[4]王漾博.玄武岩纤维橡胶沥青应力吸收层性能试验研究[D].扬州:扬州大学,2022.WANG Yangbo.Experimental study on performance of basalt fiber rubber asphalt stress absorption layer [D].Yangzhou:Yangzhou University,2022.
[5]杨美坤,李万鹏,黄卫明,等.半刚性基层开裂的沥青路面承载力响应特性 [J].辽宁工程技术大学学报 (自然科学版),2024,43(3):310-321.YANG Meikun,LI Wanpeng,HUANG Weiming,et al.Response characteristics of asphalt pavement bearing capacity with cracked semi-rigid base [J].Journal of Liaoning Technical University (Natural Science),2024,43(3):310-321.
[6]房娜仁,胡士清,李琪琪,等.基于半刚性基层强度控制的反射裂缝防治对策研究 [J].公路,2022,67(9):51-60.FANG Naren,HU Shiqing,LI Qiqi,et al.Research on countermeasures for reflection crack prevention based on strength control of semi-rigid base course [J].Highway,2022,67(9):51-60.
[7]黄立葵,张攀,胡志强,等.半刚性基层沥青路面温缩反射裂缝疲劳扩展分析 [J].公路工程,2020,45(5):79-83.HUANG Likui,ZHANG Pan,HU Zhiqiang,et al.Research on thermal crack fatigue propagation of asphalt pavement with semi-rigid base [J].Highway Engineering,2020,45(5):79-83.
[8]蒋亮.华北地区水稳基层沥青路面开裂病害分析与防治[J].公路交通科技 (应用技术版),2013,9(2):53-54.JIANG Liang.Analysis and prevention of cracking diseases in asphalt pavement with cement-stabilized base in North China [J].Journal of Highway and Transportation Research and Development:Applied Technology Edition,2013,9(2):53-54.
[9]张鹏.高等级公路半刚性基层材料的抗裂性能研究 [D].大连:大连理工大学,2007.ZHANG Peng.Research on separation and recycling technology of asphalt mixture [D].Dalian:Dalian University of Technology,2007.
[10]李文辉.应用土工织物防治复合式路面荷载型反射裂缝的试验研究 [D].重庆:重庆交通大学,2013.LI Wenhui.Experimental study on prevention of load-induced reflection cracks in composite pavement using geotextiles [D].Chongqing:Chongqing Jiaotong University,2013.
[11]HABBOUCHE J,HAJJ E Y,PIRATHEEPAN M,et al.Impact of high polymer modification on reflective cracking performance life of asphalt concrete overlays [J].International Journal of Pavement Research and Technology,2020,13(5):510-523.
[12]余波,施晓强,王力.不同应力吸收层综合性能评价研究[J].公路交通科技,2015,32(8):34-38.YU Bo,SHI Xiaoqiang,WANG Li.Research on evaluating comprehensive performance of different stress absorbing layers [J].Journal of Highway and Transportation Research and Development,2015,32(8):34-38.
[13]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.
[14]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.
[15]蒋鑫.掺蔗渣纤维橡胶沥青再生混合料路用性能研究[J].中外公路,2024,44(2):130-137.JIANG Xin.Road performance of reclaimed asphalt mixture mixed with bagasse fibers and rubber-modified asphalt [J].Journal of China & Foreign Highway,2024,44(2):130-137.
[16]马耀宗,刘聪,陈杰,等.沥青混合料应力吸收层设计方法研究 [J].公路,2021,66(4):34-39.MA Yaozong,LIU Cong,CHEN Jie,et al.Research on design method of asphalt mixture stress absorbing layer [J].Highway,2021,66(4):34-39.
[17]阳经培.基于高性能 SBS改性乳化沥青冷再生应力吸收层的研究 [D].广州:华南理工大学,2018.YANG Jingpei.Research on cold recycled stress-absorbing layer using high-performance SBS modified emulsified asphalt [D].Guangzhou:South China University of Technology,2018.
[18]祝谭雍,程其瑜,许兵,等.稳定型橡胶沥青再生应力吸收层技术性能研究 [J].公路交通科技,2018,35(12):35-41.ZHU Tanyong,CHENG Qiyu,XU Bing,et al.Study on performance of recycled stress absorbing layer with stable asphalt rubber [J].Journal of Highway and Transportation Research and Development,2018,35(12):35-41.
[19]祝谭雍,段卫党,许兵,等.基于厂拌热再生的复合改性橡胶沥青应力吸收层抗裂性能研究 [J].公路交通科技,2022,39(12):8-16.ZHU Tanyong,DUAN Weidang,XU Bing,et al.Study on crack resistance of stress absorbing layer of compound modified rubber asphalt based on plant-mixing hot recycling technology [J].Journal of Highway and Transportation Research and Development,2022,39(12):8-16.
[20]彭冬青.应力吸收层热再生混合料力学性能与路用性能试验研究 [J].路基工程,2022 (4):107-113.PENG Dongqing.Experimental study on mechanical properties and road performance of hot recycled mixture in stress absorbing layer [J].Subgrade Engineering,2022 (4):107-113.
[21]庄园,马辉.基于精细分离 RAP细料的应力吸收层再生混合料性能研究 [J].现代交通与冶金材料,2024,4(4):41-48.ZHUANG Yuan,MA Hui.Research on the performance of stress absorption layer regenerated mixtures based on fine separation of RAP fine materials [J].Modern Transportation and Metallurgical Materials,2024,4(4):41-48.
[22]郝培文,李洪祥,崔鹰翔,等.新旧沥青融合程度对热再生沥青混合料性能影响 [J].硅酸盐通报,2021,40(11):3837 -3846.HAO Peiwen,LI Hongxiang,CUI Yingxiang,et al.Influence of blending degree between aged and virgin asphalt on performance of hot recycled asphalt mixture [J].Bulletin of the Chinese Ceramic Society,2021,40(11):3837 -3846.
[23]XING C W,LI M C,LIU L Y,et al.A comprehensive review on the blending condition between virgin and RAP asphalt binders in hot recycled asphalt mixtures:Mechanisms,evaluation methods,and influencing factors [J].Journal of Cleaner Production,2023,398:136515.
[24]况栋梁,余剑英,蔡正文,等.再生剂对不同老化程度沥青再生性能的影响 [J].公路,2011,56(5):153-157.KUANG Dongliang,YU Jianying,CAI Zhengwen,et al.Effect of rejuvenator on properties of aged bitumen of different aging degree [J].Highway,2011,56(5):153-157.
[25]林金娜,孟洁平,余佳宝,等.渗透型再生剂对再生沥青性能影响的实验分析 [J].厦门理工学院学报,2020,28(3):53-57.LIN Jinna,MENG Jieping,YU Jiabao,et al.Experimental analysis on effect of diffusible rejuvenator on properties of recycled asphalt [J].Journal of Xiamen University of Technology,2020,28(3):53-57.
[26]WANG F L,LONG J,SHEN B X,et al.A study of the regenerating effects of recycling agents on aged asphalts[J].Petroleum Science and Technology,2014,32(10):1160 -1167.

Download

Share

COinS