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

Ma, F and Sha, A and Lin, R and Huang, Y and Wang, C (2016) Greenhouse Gas Emissions from Asphalt Pavement Construction: A Case Study in China. International Journal of Environmental Research and Public Health, 13 (3). ISSN 1660-4601

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Abstract

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.

Item Type: Article
Uncontrolled Keywords: MD Multidisciplinary
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
T Technology > TE Highway engineering. Roads and pavements
Divisions: Built Environment
Publisher: MDPI AG
Related URLs:
Date Deposited: 01 Apr 2016 13:44
Last Modified: 01 Apr 2016 13:44
DOI or Identification number: 10.3390/ijerph13030351
URI: http://researchonline.ljmu.ac.uk/id/eprint/3358

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