Analysis of the Environmental Load During the Life Cycle of Road Snow-melting and Deicing Technology

被引:0
作者
Guo, Meng [1 ,2 ]
Cai, Xiao-Xiao [1 ,2 ]
Wang, Jing-Jing [1 ,2 ]
Du, Xiu-Li [1 ,2 ]
机构
[1] National Key Laboratory of Bridge Safety and Resilience, Beijing University of Technology, Beijing
[2] The Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing
来源
Zhongguo Gonglu Xuebao/China Journal of Highway and Transport | 2024年 / 37卷 / 09期
基金
中国国家自然科学基金;
关键词
asphalt pavement; deicing; environmental load; life cycle assessment; pavement engineering; snow melting;
D O I
10.19721/j.cnki.1001-7372.2024.09.015
中图分类号
学科分类号
摘要
Currently, the widely used snow-melting and deicing methods cause damage to road surfaces and the environment. To study the impact of asphalt-pavement snow-melting and deicing technology on the environment during its life cycle, three different snow-melting and deicing technologies were investigated: pavement containing salt, cable-heated pavement, and mechanical ice removal. Based on the life-cycle assessment method, the three snow-melting and deicing technologies were divided into five processes: raw-material mining, mixing, transportation, paving compaction, and snow removal. The impact of environmental emissions over the life cycle of the three snow-melting and deicing technologies was quantified. Four environmental impacts-global-warming potential (GWP), acidification potential (AP), photochemical ozone creation potential (POCP), and human toxicity potential (HTP)-were considered to evaluate the environmental load of snow-melting and deicing technology. The results show that CO2 emissions are the largest in all stages of snow melting and deicing. The environmental loads of the three snow-melting and de-icing technologies are ranked throughout the life cycle: GWP> HTP> AP> POCP. Of the four impact categories, GWP accounts for more than 74% of the environmental load of the different snow-melting and de-icing technologies. To compare the environmental loads of different snow-melting and deicing technologies, their analysis results were normalized. It is concluded that the environmental load generated by the cable-heated pavement is the largest, while that generated by the pavement containing salt is the smallest. © 2024 Chang'an University. All rights reserved.
引用
收藏
页码:186 / 196
页数:10
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