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Review of ultraviolet ageing mechanisms and anti-ageing methods for asphalt binders

Journal of Road Engineering 2022年第2期2卷 137-155页

作者： Yuanyuan Li Jianlin Feng Shaopeng Wu Anqi Chen Dongliang Kuang Tao Bai Yangming Gao Jizhe Zhang Linglin Li Liyao Wan Quantao Liu Zongwu Chen Dengjun Gu School of Civil Engineering and Architecture Wuhan Institute of TechnologyWuhan 430074China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China Nottingham Transportation Engineering Centre School of Civil EngineeringUniversity of NottinghamNottingham NG72RDUK School of Materials Science and Engineering Chang’an UniversityXi’an 710064China Marie S.Curie Research Fellow Section of Pavement Engineering Faculty of Civil Engineering and GeosciencesDelft University of TechnologyDelft 2628 CNthe Netherlands School of Qilu Transportation Shandong UniversityJinan 250002China School of Automotive and Transportation Engineering Hefei University of TechnologyHefei 230000China Faculty of Engineering China University of GeosciencesWuhan 430074China

Asphalt binder is inevitably aged by ultraviolet(uv)light during its service *** ageing can significantly decrease the technical properties of asphalt *** sensitivity of asphalt to uv ageing and thermal-oxidative ageing differs,such that the uv ageing performance cannot be determined based on the thermal-oxidative ageing *** researches mainly focused on the chemical composite and technical performance changes of asphalt binder during uv ageing,and the uv light parameters effect on the ageing rate of asphalt ***,the theory for characterizing and explaining the development of uv ageing depth does not get too much attentions,and the uv ageing mechanism of asphalt binder is not very ***,it cannot guide to develop or select the good methods or anti-uv ageing additives for asphalt *** paper focuses on the latest researches of the mechanisms and anti-ageing methods of asphalt *** the increase of uv ageing time,the uv ageing of asphalt binder develops gradually from the surface to inner *** are various methods,such as low-penetration grade asphalt,less air void ratio,uv stabilizers and uv light absorbers,that can improve the uv ageing resistance of asphalt binders.A new theory of sensitive wavelengths of asphalt uv ageing is proposed,which can enrich the basic theory of asphalt uv *** on this theory,different wavelengths of uv light have different ageing effects on asphalt *** composite anti-uv ageing additives with barrier and specific absorption effects on uv light is proposed,and may have better improvement effect on the anti-uv ageing performance of asphalt binder.

关键词： Road engineering Asphalt pavement Asphalt binder uv ageing anti-uv ageing method

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