The Effect of Ultraviolet Radiation on Bitumen Aging Depth

被引：32
作者：
Hu, Jinxuan [1 ]
Wu, Shaopeng [1 ]
Liu, Quantao [1 ]
Hernandez, Maria Inmaculada Garcia [1 ]
Zeng, Wenbo [1 ]
Nie, Shuai [1 ]
Wan, Jiuming [1 ]
Zhang, Dong [1 ]
Li, Yuanyuan [1 ]
机构：
[1] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China
来源：
MATERIALS | 2018年 / 11卷 / 05期
关键词：
ultraviolet radiation; bitumen; aging depth; transmittance; permeation; LAYERED DOUBLE HYDROXIDES; MODIFIED ASPHALT; RHEOLOGY; CHEMISTRY; BINDERS; PHOTODEGRADATION; RESISTANCE; OXIDATION; EVOLUTION;
D O I：
10.3390/ma11050747
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The aging effect of ultraviolet (UV) radiation on bitumen has gained increasing attention from researchers, resulting in the emergence of a new method to simulate the UV aging that occurs during the service life of bitumen. However, the UV aging degree is closely related to bitumen thickness and the effect of UV radiation on aging depth is not clear. The relationship between ultraviolet (UV) radiation and bitumen UV aging depth was investigated in this paper. Three groups of samples were UV aged using different aging procedures to investigate the bitumen aging mechanism of UV radiation. The results from the first group showed that UV aging depth increased along with aging time. After aging for five hours, the complex modulus of the second and third layers increased. The second group's results indicated that the aging effect of ozone was small and that the increase in aging depth was uncorrelated with ozone. The results from the third group showed that the transmittance of bitumen increased after UV aging and that the real reason why aging depth increased was permeation.
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页数：14
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