Enhancement of Anti-UV Aging Performance of Asphalt Modified by UV-531/Pigment Violet Composite Light Stabilizers

被引：1
作者：
Zhang, Fa [1 ]
Liu, Yang [2 ]
Cao, Zhenhao [1 ]
Liu, Yifan [1 ]
Ren, Yufang [1 ]
Liang, Haishan [1 ]
Wang, Kunyu [1 ]
Zhang, Yanyan [1 ]
Wang, Jia [1 ]
Li, Xue [1 ,3 ]
机构：
[1] Univ Jinan, Sch Chem & Chem Engn, 336 West Rd Nan Xinzhuang, Jinan 250022, Peoples R China
[2] Shandong Acad Environm Sci Co Ltd, 1277 Zhenyuan St, Jinan 250100, Peoples R China
[3] Jinan Daoerdao New Mat Technol Co Ltd, 988 Shunxing Rd, Jinan 250199, Peoples R China
来源：
PROCESSES | 2024年 / 12卷 / 12期
关键词：
resistant to UV aging; composite-modified asphalt; pigment violet; UV absorber; UV-531; RHEOLOGICAL PROPERTIES; ULTRAVIOLET-RADIATION; RESISTANCE;
D O I：
10.3390/pr12122758
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Ultraviolet (UV) radiation accelerates the aging of asphalt pavements and shortens the service life of the pavement. To effectively mitigate the impact of UV aging on asphalt performance, a novel composite anti-UV aging agent, 2-hydroxy-4-n-octyoxybenzophenone/pigment violet (UV-531/PV), was developed. After UV-accelerated aging, the modified asphalt samples were characterized by conventional performance tests, Fourier transform infrared spectroscopy (FTIR), gel permeation chromatography (GPC), and a dynamic shear rheometer (DSR). The results show that UV-531/PV-composite-modified asphalt maintains excellent conventional properties after UV aging. The FTIR testing showed that the changes in carbonyl index (Ic=o) and sulfoxide index (Is=o) of the composite-modified asphalt were significantly smaller than those of the matrix asphalt, indicating the less oxidation degree of the composite-modified asphalt. The GPC test results showed that the change in molecular weight of the composite-modified asphalt after UV aging was less than that of the matrix asphalt. DSR results showed that UV-531/PV-modified asphalt exhibited higher viscoelasticity and higher rutting resistance than unmodified asphalt. This study proposes a new method for preparing anti-UV aging asphalt, which can be used for micro-surfacing, fog sealing or ultra-thin overlay on road surfaces.
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页数：13
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