•  
  •  
 

Corresponding Author

于斌，男，博士，教授.E-mail：yb@seu.edu.cn

Abstract

Asphalt aging is one of the most important concerns during the use of asphalt pavement.However，asphalt usually exists in the form of a film in the mixture.Oxygen diffusion is an important factor affecting asphalt aging.To investigate the oxygen diffusion behavior in asphalt film under different working conditions，an oxygen-asphalt-aggregate （OAA） model was developed in this study to simulate the state of the asphalt film on the aggregate surface under real conditions.Oxygen diffusion and asphalt component migration in the OAA model were investigated under different conditions of time，temperature，oxygen concentration，and aggregate type.The influence of each factor on the molecular behavior of the model was compared by calculating the relative concentration of molecules，radial distribution function，mean square displacement，and diffusion coefficient，and the connection between the parameters was further analyzed.From the molecular simulation results，it is clear that the oxygen concentration increases with the increase in diffusion time，and the oxygen concentration at the interface between aggregate and asphalt increases significantly.Higher temperature promotes the diffusion of oxygen into the asphalt film，and oxygen concentration varies nearly linearly with temperature.Increasing the number of oxygen molecules can make the relative concentration of oxygen molecules wi thin the asphalt film increase overall，and the CaCO3 aggregate is more favorable for oxygen diffusion into the asphalt film.

Publication Date

7-30-2024

DOI

10.14048/j.issn.1671-2579.2024.04.014

First Page

115

Last Page

126

Submission Date

February 2025

Reference

[1]梁波 ,兰芳 ,郑健龙 .沥青的老化机理与疲劳性能关系的研究进展 [J].材料导报 ,2021 ,35(9):9083 -9096 .LIANG Bo ,LAN Fang ,ZHENG Jianlong .Research and development of relationship between aging mechanism and fatigue properties of asphalt [J].Materials Reports ,2021 ,35(9):9083 -9096 .
[2]郭猛 ,任鑫 ,焦峪波 ,等.沥青及沥青混合料老化与抗老化研究综述 [J].中国公路学报 ,2022 ,35(4):41-59.GUO Meng ,REN Xin ,JIAO Yubo ,et al .Review of aging and antiaging of asphalt and asphalt mixtures [J].China Journal of Highway and Transport ,2022 ,35(4):41-59.
[3]邱延峻 ,丁海波 .基于热分析与低温光谱的沥青热可逆老化机理 [J].中国公路学报 ,2022 ,35(6):221-229.QIU Yanjun ,DING Haibo .Mechanisms of thermoreversible aging of asphalt binders based on thermal analysis and low-temperature fourier-transform infrared spectroscopy[J].China Journal of Highway and Transport ,2022 ,35(6):221-229.
[4]徐浩 ,张文武 ,何兆益 ,等.沥青老化及再生对自愈合性能的影响 [J].建筑材料学报 ,2022 ,25(10):1070 -1076 .XU Hao ,ZHANG Wenwu ,HE Zhaoyi ,et al .Influence of asphalt aging and regeneration on self-healing performance [J].Journal of Building Materials ,2022 ,25(10):1070 -1076 .
[5]王珊珊 ,郑华宇 ,朱建国 ,等.基于固相萃取法结合顶空GC-MS技术的沥青老化机理研究 [J].中国公路学报 ,2022 ,35(10):114-124.WANG Shanshan ,ZHENG Huayu ,ZHU Jianguo ,et al .Study on asphalt aging mechanism based on solid phase extraction combined with headspace GC-MS [J].China Journal of Highway and Transport ,2022 ,35(10):114-124.
[6]王淋 ,郭乃胜 ,温彦凯 ,等.考虑老化影响的岩沥青复合改性沥青流变特性及微观机制 [J].材料导报 ,2020 ,34(18):18065 -18073 .WANG Lin ,GUO Naisheng ,WEN Yankai ,et al .Rheological properties and microscopic mechanism of rock asphalt composite modified asphalt with consideration of aging effect [J].Materials Reports ,2020 ,34(18):18065 -18073 .
[7]崔亚楠 ,周军 ,赵琳 .热老化下沥青胶浆微观结构及自愈合性能评价 [J].建筑材料学报 ,2021 ,24(6):1271 -1279 .CUI Yanan ,ZHOU Jun ,ZHAO Lin .Evaluation of microstructure and self-healing properties of asphalt mortar under heat aging [J].Journal of Building Materials ,2021 ,24(6):1271 -1279 .
[8]闫景晨，马炎沛，闫俊杰 .不同重复加载频率下老化沥青混凝土开裂性能 [J].中外公路 ，2023 ,43（2） ：219-226.YAN Jingchen ，MA Yanpei ，YAN Junjie .Aging asphalt concrete cracking performance under different cyclic loading frequencies [J].Journal of China & Foreign Highway ,2023，43(2):219-226.
[9]《中国公路学报 》编辑部 .中国路面工程学术研究综述 ·2020 [J].中国公路学报 ,2020 ,33(10):1-66.Editorial Office of China Journal of Highway and Transport .Review on China ’s pavement engineering research ⋅2020 [J].China Journal of Highway and Transport ,2020 ,33(10):1-66.
[10]叶向前 ,邹晓翎 ,田发富 .紫外老化对 SBS-MCR 复合改性沥青流变性能影响规律研究 [J].中外公路 ，2022 ,42（6） ：236-240.YE Xiangqian ，ZOU Xiaoling ，TIAN Fafu .Study on influence of ultraviolet radiation aging on rheological properties of SBS-MCR modified asphalt [J].Journal of China & Foreign Highway ,2022，42(6):236-240.
[11]余琦 ,赵兵 ,易凯 ,等.基于流变指标的沥青老化程度评价与机理分析 [J].武汉理工大学学报 (交通科学与工程版 ),2021 ,45(5):965-970.YU Qi ,ZHAO Bing ,YI Kai ,et al .Evaluation and mechanism analysis of asphalt aging degree based on rheological index [J].Journal of Wuhan University of Technology (Transportation Science & Engineering ),2021 ,45(5):965-970.
[12]WANG F ,XIAO Y ,CUI P D ,et al .Correlation of asphalt performance indicators and aging degrees :A review [J].Construction and Building Materials ,2020 ,250:118824 .
[13]LIU Q ,WU J T ,XIE L L ,et al .Micro-scale investigation of aging gradient within bitumen film around air-binder interface [J].Fuel ,2021 ,286:119404 .
[14]YAO Z H ,LU G L ,YANG J ,et al .Nanoindentation characterization of aging gradient of mastic in asphalt mixtures [J].Construction and Building Materials ,2019 ,214:187-195.
[15]邢超 ,谭忆秋 ,张凯 ,等.基于材料基因组方法的沥青混合料基因特性综述及展望 [J].中国公路学报 ,2020 ,33(10):76-90.XING Chao ,TAN Yiqiu ,ZHANG Kai ,et al .Review and prospect of genetic characteristics of asphalt mixture based on material genome method [J].China Journal of Highway and Transport ,2020 ,33(10):76-90.
[16]谭忆秋 ,李冠男 ,单丽岩 ,等.沥青微观结构组成研究进展[J].交通运输工程学报 ,2020 ,20(6):1-17.TAN Yiqiu ,LI Guannan ,SHAN Liyan ,et al .Research progress of bitumen microstructures and components [J].Journal of Traffic and Transportation Engineering ,2020 ,20(6):1-17.
[17]汪海年 ,丁鹤洋 ,冯珀楠 ,等.沥青混合料分子模拟技术综述[J].交通运输工程学报 ,2020 ,20(2):1-14.WANG Hainian ,DING Heyang ,FENG Ponan ,et al .Advances on molecular simulation technique in asphalt mixture [J].Journal of Traffic and Transportation Engineering ,2020 ,20(2):1-14.
[18]王雨瑾 ,文科 ,陶志华 ,等.基于模拟服役状态的沥青紫外老化性能研究 [J].武汉理工大学学报 (交通科学与工程版),2018 ,42(1):83-86,92.WANG Yujin ,WEN Ke ,TAO Zhihua ,et al .Research on the performance of ultraviolet aged asphalt based on simulated service condition [J].Journal of Wuhan University of Technology (Transportation Science & Engineering ),2018 ,42(1):83-86,92.
[19]李萍 ,慕博博 ,念腾飞 ,等.红外光谱 (FTIR )和荧光显微镜(FM)表征再生剂在老化沥青中的扩散行为 [J].材料科学与工程学报 ,2022 ,40(5):767-773,784.LI Ping ,MU Bobo ,NIAN Tengfei ,et al .Characterization the diffusion behavior of regenerant in aged asphalt by FTIR and FM [J].Journal of Materials Science and Engineering ,2022 ,40(5):767-773,784.
[20]司应科 ,林梅 ,张伟 ,等.回收废旧沥青再生的黏弹特性分析[J].公路 ,2022 ,67(10):386-389.SI Yingke ,LIN Mei ,ZHANG Wei ,et al .Analysis of viscoelastic properties of recycled waste asphalt rejuvenation [J].Highway ,2022 ,67(10):386-389.
[21]桑帆 ,陈忠华 ,于晓贺 ,等.紫外老化对抗燃油沥青混凝土抵抗疲劳开裂性能的影响 [J].武汉理工大学学报 (交通科学与工程版 ),2023 ,47(6):1131 -1135 .SANG Fan ,CHEN Zhonghua ,YU Xiaohe ,et al .Effect of ultraviolet aging on fatigue cracking resistance of asphalt concrete [J].Journal of Wuhan University of Technology (Transportation Science & Engineering ),2023 ,47(6):1131 -1135 .
[22]崔鹏 .硬质沥青对老化沥青及沥青混合料性能的影响[J].公路交通科技 ,2022 ,39(9):33-42.CUI Peng .Influence of hard asphalt on performance of aged asphalt and asphalt mixture [J].Journal of Highway and Transportation Research and Developmen ,2022 ,39(9):33-42.
[23]汪海年 ,徐宁 ,陈玉 ,等.生物油再生老化沥青材料研究进展[J].中国公路学报 ,2023 ,36(5):1-20.WANG Hainian ,XU Ning ,CHEN Yu ,et al.Advances in bio-oil regenerated aged asphalt materials [J].China Journal of Highway and Tra nsport ,2023 ,36(5):1-20.

Download

Share

COinS