Characterization and molecular mechanism of the thermal-oxidative gradient aging behavior in asphalt films

被引：27
作者：
Liu, Qi [1 ]
Yu, Bin [1 ]
Falchetto, Augusto Cannone [2 ]
Wang, Di [2 ]
Liu, Jinzhou [1 ]
Bo, Wu [1 ]
机构：
[1] Southeast Univ, Sch Transportat, Nanjing 211189, Jiangsu, Peoples R China
[2] Aalto Univ, Dept Civil Engn, Rakentajanaukio 4, Espoo 02150, Finland
来源：
MEASUREMENT | 2022年 / 199卷
关键词：
Thermal oxygen aging; Gradient behavior; Molecular dynamics simulation; Oxygen diffusion; Component migration; Nanoindentation; RESISTANCE;
D O I：
10.1016/j.measurement.2022.111567
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To investigate the aging differences of asphalt films in the vertical aggregate direction, a three-layers model of oxygen-asphalt-aggregate was generated to explore the molecular mechanism of gradient aging. Moreover, the asphalt-aggregate specimens aged for 10, 20, and 40 h were layered for three parts. Fourier transforms infrared spectroscopy and thin layer chromatography-flame ionization detector tests verified the simulative findings. Eventually, the moduli of the asphalt pellicles were tested using nanoindentation test. Results denote that the oxygen's diffusion and distribution of four components are more sensitive to pressure. The aging grade and component content of the asphalt membranes at miscellaneous thicknesses have significant differences. The combined effects of component volatilization, oxidation reactions and component migration lead to mutates in the modulus gradient of the asphalt films. The carbonyl content difference between the top and bottom of the three binders are approximately 0.22,-0.13, and -0.27, respectively. Meanwhile, the maximum difference in modulus of binders and mastics are about 2.7 and 320.2 MPa.
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页数：14
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共 44 条
[1]   The role of binders in mixture cracking resistance measured by ideal-CT test [J].
Chen, Hui ;
Zhang, Yuan ;
Bahia, Hussain U. .
INTERNATIONAL JOURNAL OF FATIGUE, 2021, 142
[2]   Investigation of ultraviolet radiation aging gradient in asphalt binder [J].
Chen, Zihao ;
Zhang, Henglong ;
Duan, Haihui .
CONSTRUCTION AND BUILDING MATERIALS, 2020, 246
[3]   Performance characteristics of asphalt materials based on molecular dynamics simulation - A review [J].
Chen, Zixuan ;
Pei, Jianzhong ;
Li, Rui ;
Xiao, Feipeng .
CONSTRUCTION AND BUILDING MATERIALS, 2018, 189 :695-710
[4]   Laboratory investigation on low-temperature performance of asphalt at different aging stages [J].
Cheng, Xianpeng ;
Han, Sen ;
Liu, Yamin ;
Xu, Ouming .
CONSTRUCTION AND BUILDING MATERIALS, 2019, 229
[5]   Effect of asphalt film thickness on shear mechanical properties of asphalt-aggregate interface [J].
Dong, Mansheng ;
Sun, Wei ;
Li, Linglin ;
Gao, Yangming .
CONSTRUCTION AND BUILDING MATERIALS, 2020, 263
[6]   Repeatability and sensitivity of FTIR ATR spectral analysis methods for bituminous binders [J].
Hofko, Bernhard ;
Alavi, Mohammad Zia ;
Grothe, Hinrich ;
Jones, David ;
Harvey, John .
MATERIALS AND STRUCTURES, 2017, 50 (03)
[7]   Applications of Fourier transform infrared spectroscopy technologies on asphalt materials [J].
Hou, Xiangdao ;
Lv, Songtao ;
Chen, Zheng ;
Xiao, Feipeng .
MEASUREMENT, 2018, 121 :304-316
[8]   Effect of styrene-butadiene-styrene copolymer on the aging resistance of asphalt: An atomistic understanding from reactive molecular dynamics simulations [J].
Hu, Dongliang ;
Gu, Xingyu ;
Cui, Bingyan .
FRONTIERS OF STRUCTURAL AND CIVIL ENGINEERING, 2021, 15 (05) :1261-1276
[9]   Modeling the Oxidative Aging Kinetics and Pathways of Asphalt: A ReaxFF Molecular Dynamics Study [J].
Hu, Dongliang ;
Gu, Xingyu ;
Cui, Bingyan ;
Pei, Jianzhong ;
Zhang, Qipeng .
ENERGY & FUELS, 2020, 34 (03) :3601-3613
[10]   Understanding the Aging Depth Gradient Distribution of High Viscosity Modified Asphalt under the Effect of Solar Radiation and Diffuse Oxygen [J].
Hu, Mingjun ;
Ma, Jianmin ;
Sun, Daquan ;
Ling, Senlin ;
Lu, Tong ;
Ni, Hangtian .
ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2021, 9 (45) :15175-15189
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