[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(
)
适应西藏高原环境的沥青抗紫外线老化试验研究
)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
- 适应西藏高原环境的沥青抗紫外线老化试验研究
- 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.
- 紫外线是导致西藏高原沥青路面早期损害的主要原因之一.根据实测的紫外线辐射水平, 进行了不同掺量的3种纳米级抗紫外线老化剂(TiO2, CeO2和炭黑)的SBR沥青紫外线老化试验.针对老化后的沥青, 进行了常规指标(TFOT后的针入度比、软化点)和SHRP指标的评价.针对已老化不同时间(500, 1 000和1 500 h)的、掺加0.8%炭黑的沥青, 分别进行了红外光谱分析.采用灰色关联分析法, 确定了抗紫外线老化剂的最佳掺量.结果表明, TiO2和CeO2不仅是好的紫外线吸收或屏蔽剂, 而且是一种强氧化剂;炭黑是良好的抗紫外线老化剂, 其最佳掺量为沥青质量的0.8%;沥青紫外线老化主要发生在老化前期, 老化时间越长老化越严重.
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.