[1] Liao Gongyun, Huang Xiaoming, Ba Sang Dunzhu,. Anti-ultraviolet aging tests of asphalts adapting to environmentin Tibetan Plateau of China [J]. Journal of Southeast University (English Edition), 2008, 24 (4): 503-507. [doi:10.3969/j.issn.1003-7985.2008.04.021]

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Anti-ultraviolet aging tests of asphalts adapting to environmentin Tibetan Plateau of China()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

24

Issue:

2008 4

Page:

503-507

Research Field:

Traffic and Transportation Engineering

Publishing date:

2008-12-30

Info

Title:

Anti-ultraviolet aging tests of asphalts adapting to environmentin Tibetan Plateau of China

Author(s):

Liao Gongyun¹;  Huang Xiaoming¹;  Ba Sang Dunzhu²

¹School of Transportation, Southeast University, Nanjing 210096, China
²Department of Communications of Xining, Xining 810000, China

Keywords:

ultraviolet(UV)aging;  agent;  carbon black;  infrared absorption spectral analysis;  grey incidence analysis

PACS:

U214.7+5

DOI:

10.3969/j.issn.1003-7985.2008.04.021

Abstract:

Ultraviolet(UV)aging is one of the main factors which cause premature damage of asphalt pavements in the Tibetan Plateau, China.According to the measured levels of UV radiation, aging tests of styrene-butadiene rubber(SBR)asphalts with different contents of three anti-UV-aging agents including nano-TiO₂, CeO₂ and carbon black are performed.Common indices, which include retained penetration after thin film oven tests(TFOT)and softening point, and strategic highway research program(SHRP)indices of aged asphalts are evaluated.Infrared absorption spectral analysis is performed on asphalt specimens with 0.8% carbon black which have been aged for different aging times(500, 1000 and 1 500 h).By grey incidence analysis, the optimal contents of anti-UV-aging agents are determined.The results show that TiO₂ and CeO₂ are not only good UV absorbing or shielding agents, but also strong oxidants.Carbon black is a good anti-UV-aging agent, and its optimal content is about 0.8% of asphalt weight.UV aging of asphalt mainly occurs in the early stages of aging.The longer the aging time, the more severe the aging of asphalt.

References:

[1] Ba Sang Dunzhu.Study on aging properties of asphalt pavement in Tibet [D].Nanjing:School of Transportation of Southeast University, 2007.(in Chinese)
[2] Application technology of asphalt pavements in alpine region of eastern Tibet, China[R].Harbin: Harbin Institute of Technology, 2005.(in Chinese)
[3] Chiu Chui-Te.Investigation on laboratory asphalt aging processes for development of an effective procedure to characterize asphalt durability [D].Gainesville: University of Florida, 1994.
[4] Zhao Xiaozheng, Guo Jincun, Liao Kejian, et al.Application of ultraviolet absorption antiaging(agent)in asphalt:establishment of aging kinetic models [J].Petrochemical Technology and Application, 2004, 22(6):410-413.(in Chinese)
[5] Zhao Xiaozheng, Guo Jincun, Liao Kejian, et al.Application of ultraviolet absorption antiaging(agent)in asphalt[J].Petrochemical Technology and Application, 2005, 23(3):196-198.(in Chinese)
[6] Dong Wenlong, Liu Liping, Jiang Tao, et al.Analysis of additives dosage to asphalt ultraviolet radiation anti-aging performance [J].Journal of Shandong Jiaotong University, 2006, 14(4):58-62.(in Chinese)
[7] Dong Wenlong, Liu Liping, Song Wenxia, et al.Improvement of ultraviolet radiation additives on asphalt anti-aging performance [J].Petroleum Asphalt, 2007, 21(1):6-9.(in Chinese)
[8] Jiang Tao, Liu Liping, Zhang Zhiquan, et al.Effects of ultraviolet radiation on asphalt performance [J].Central South Highway Engineering, 2006, 31(4):37-40.(in Chinese)
[9] Wu Huan, Liang Naixing.Analysis of the ultraviolet aging of SBR modified asphalt mixture [J].Journal of Chongqing Jiaotong University, 2007, 26(2):72-74.(in Chinese)
[10] Zhou Jian, Yu Jinjian.Study on aging resistance property of PP/TiO₂ nanocomposite [J].Engineering Plastics Application, 2004, 32(5):50-53.(in Chinese)
[11] Liu Sifeng, Guo Tianbang, Dang Yaoguo, et al.Grey system theory and application [M].2nd ed.Beijing:Science Press, 1999.(in Chinese)

Memo

Memo:

Biography: Liao Gongyun(1975—), male, doctor, lecturer, lg@seu.edu.cn.
Citation: Liao Gongyun, Huang Xiaoming, Ba Sang Dunzhu.Anti-ultraviolet aging tests of asphalts adapting to environment in Tibetan Plateau of China[J].Journal of Southeast University(English Edition), 2008, 24(4):503-507.

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