新疆严寒区UV老化下的沥青路面抗损劣性能研究

doi:10.11896/cldb.21100120

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Abstract To mitigate the structural performance deterioration of asphalt surface layers under the harsh environment in Xinjiang,by blending the nano-TiO₂ and the basalt fibers into the asphalt mixture simultaneously, the experiment of the nano-TiO₂ asphalt mastic after UV aging was conducted under a simulated UV-radiation test environment, including three major indicators, infrared spectra and scanning electron microscopy. In this study, four experiments were conducted, including freeze-thaw splitting test, high-temperature rutting test, semicircular bending and pulling (SCB) test, and four-point bending fatigue life test under UV aging on two typical surface asphalt mixtures AC-16 and SMA-16 in Xinjiang. Through these tests, this study aims to analyze the damage resistance of the asphalt mixture structure reinforced with nano-TiO₂ and basalt fiber composite. The results show that 3.0% (mass fraction of asphalt) of nano-TiO₂ can effectively resist the degradation of asphalt mastic due to aging. The deteriorating effect of UV aging can seriously weaken the road performance and fatigue life of AC-16 and SMA-16 asphalt mixtures. However, by adding nano-TiO₂ and basalt fiber, the road performance of AC-16 and SMA-16 can be significantly improved, and also can effectively enhance the ability of asphalt mixture structure under UV aging to resist freeze-thaw damage, high-temperature deformation, low temperature cracking, and fatigue damage.

Key words： asphalt pavement UV aging nano-TiO₂ basalt fiber road performance structural damage

Published: 10 November 2022 Online: 2022-11-03

CLC number:

U414

Fund:Natural Science Foundation of Xinjiang Uygur Autonomous Region(2021D01B70) and the Scientific Research Program of Xinjiang Region Universities(XJEDU2021Y056).

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	Articles by authors
	LI Wenbo
	ZHANG Shuangxia
	SHI Qianqian
	YU Mingming

Cite this article:

LI Wenbo,ZHANG Shuangxia,SHI Qianqian, et al. Research on Anti-damage Performance of Asphalt Pavement Under UV Aging in Severe Cold Region of Xinjiang[J]. Materials Reports, 2022, 36(21): 21100120-6.

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http://www.mater-rep.com/EN/10.11896/cldb.21100120 OR http://www.mater-rep.com/EN/Y2022/V36/I21/21100120

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