Analysis of the microcharacteristics of different kinds of asphalt based on different aging conditions

Journal article (2022)

Authors

Zhongshi Pei Harbin Institute of Technology, Harbin Quan Traffic Technology Co., Ltd
Meng Xu Shenzhen Tianjian (Group) Co., Ltd
Jiwei Cao Liaoning Provincial Transportation Investment Group Co., Ltd
Decheng Feng Harbin Institute of Technology
Wei Hu Liaoning Provincial Transportation Investment Group Co., Ltd
Junda Ren Liaoning Provincial Transportation Investment Group Co., Ltd
R. Jing Pavement Engineering - CEG
Junyan Yi Harbin Institute of Technology
Research Group
Pavement Engineering (CEG) (TU Delft)
Copyright: © 2022 Zhongshi Pei, Meng Xu, Jiwei Cao, Decheng Feng, Wei Hu, Junda Ren, R. Jing, Junyan Yi
DOI: https://doi.org/10.1617/s11527-022-02088-3
Ultraviolet aging Grade of asphalt Microcharacteristics Oil source of asphalt Road materials Thermo-oxidative aging
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Published Date

2022

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Engineering Structures

Research Group

Pavement Engineering

Abstract

Asphalt aging often leads to rapid degradation of road performance, which seriously affects the service life of asphalt pavement. Exploring the influence of asphalt oil sources, asphalt grades, and filler types on asphalt microcharacteristics in the asphalt aging process can provide an essential reference to guide asphalt pavement maintenance. In this study, we selected seven kinds of asphalt and three fillers commonly used in China for research. The pressurized aging vessel (PAV) and homemade ultraviolet (UV) aging equipment were used to perform thermo-oxidative aging and UV aging tests, respectively, of asphalt. The microcharacteristics of asphalt before and after aging were analyzed via attenuated total reflectance fourier transformation infrared spectroscopy and nuclear magnetic resonance 1H spectroscopy. The results show that the oil source of asphalt exerted the most significant influence on the microcharacteristics of the aged asphalt, while the effect of the asphalt grade was relatively limited. The addition of fillers did not affect the aging mechanism of asphalt. UV and PAV aging generated apparent differences in the changes in the aged asphalt microstructure.