Changes of asphalt fumes in hot-mix asphalt pavement recycling

doi:10.1016/j.jclepro.2020.120586

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	Changes of asphalt fumes in hot-mix asphalt pavement recycling
	Mo, Shicong 1,5; Wang, Yuhong 5; Xiong, Feng 1; Ai, Chunjin 6; Wang, Dawei 2,4; Tan, Giin Yu Amy 3
	2020-06-10
关键词	Aromatization Asphalt pavements Binders Chemical analysis Fumes Hazards Health Mineral oils Oxidation Polycyclic aromatic hydrocarbons RecyclingAsphalt fumes Economic and environmental benefits Engineering properties Environmental hazards Hot mix asphalt pavements Mitigation measures Polycyclic aromatic hydrocarbons (PAHS) Reclaimed asphalt pavements
卷号	258
DOI	10.1016/j.jclepro.2020.120586
英文摘要	Hot-mix asphalt pavement recycling is widely practiced for its economic and environmental benefits. Existing studies are mainly focused on the engineering properties of reclaimed asphalt pavement (RAP) materials, without considering their impacts on the generated asphalt fumes—a widely recognized environmental hazard. The effects of using RAP on asphalt fumes are systematically studied in this research. Asphalt binders from different sources were used to create RAP materials in three aging conditions. Asphalt fumes were generated and collected from non-aged asphalt materials as well as RAP materials, followed by gravimetric and chemical analysis of the collected asphalt fumes. RAP materials were found to generate greater amount of particulates in asphalt fumes as compared with non-aged ones. RAP materials are also associated with increase in the types and concentrations of polycyclic aromatic hydrocarbons (PAHs) in asphalt fumes, especially those PAHs with more than three aromatic rings. PAHs increase in asphalt fumes is particularly noticeable for RAP created in the natural aging condition. It is reasonable to conclude that asphalt fumes generated from RAP become more hazardous, hence deserving more attention from researchers and practitioners. The mechanisms of the increase in PAHs are discussed, in addition to field exposure studies and mitigation measures. © 2020 Elsevier Ltd
会议录	Journal of Cleaner Production
会议录出版者	Elsevier Ltd
语种	英语
ISSN号	09596526
WOS研究方向	Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
WOS记录号	WOS:000525323600031
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/132709]
专题	兰州理工大学
作者单位	1.College of Architecture and Environment, Sichuan University, China; 2.Institute of Highway Engineering, RWTH Aachen University, Mies-van-der-Rohe-Straße 1, Aachen; 52074, Germany 3.Department of Civil Engineering, The University of Hong Kong, Hong Kong; 4.School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, China; 5.Dept. of Civil & Environment Engineering, Hong Kong Polytechnic University, Hong Kong; 6.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; Gansu, China;
推荐引用方式 GB/T 7714	Mo, Shicong,Wang, Yuhong,Xiong, Feng,et al. Changes of asphalt fumes in hot-mix asphalt pavement recycling[C]. 见:.