Greenhouse Gas Emissions from Asphalt Pavement Construction: A Case Study in China

被引:58
|
作者
Ma, Feng [1 ]
Sha, Aimin [1 ]
Lin, Ruiyu [1 ]
Huang, Yue [2 ]
Wang, Chao [1 ]
机构
[1] Changan Univ, Minist Educ, Key Lab Special Area Highway Engn, Xian 710064, Peoples R China
[2] Liverpool John Moores Univ, Sch Civil Engn, Peter Jost Enterprise Ctr, Byrom St, Liverpool L3 3AF, Merseyside, England
基金
美国国家科学基金会;
关键词
environmental impacts; construction process; asphalt pavements; greenhouse gas; LIGHT;
D O I
10.3390/ijerph13030351
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In China, the construction of asphalt pavement has a significant impact on the environment, and energy use and greenhouse gas (GHG) emissions from asphalt pavement construction have been receiving increasing attention in recent years. At present, there is no universal criterion for the evaluation of GHG emissions in asphalt pavement construction. This paper proposes to define the system boundaries for GHG emissions from asphalt pavement by using a process-based life cycle assessment method. A method for evaluating GHG emissions from asphalt pavement construction is suggested. The paper reports a case study of GHG emissions from a typical asphalt pavement construction project in China. The results show that the greenhouse gas emissions from the mixture mixing phase are the highest, and account for about 54% of the total amount. The second highest GHG emission phase is the production of raw materials. For GHG emissions of cement stabilized base/subbase, the production of raw materials emits the most, about 98%. The GHG emission for cement production alone is about 92%. The results indicate that any measures to reduce GHG emissions from asphalt pavement construction should be focused on the raw materials manufacturing stage. If the raw materials production phase is excluded, the measures to reduce GHG emissions should be aimed at the mixture mixing phase.
引用
收藏
页数:15
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