Life-cycle assessment of asphalt pavement recycling

Xiaodan Chen, Hao Wang

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Scopus citations

Abstract

The number of studies on pavement life-cycle assessment (LCA) is increasing in the recent years. This chapter reviews the LCA studies focusing on asphalt pavement recycling, including hot, warm, and cold recycling methods, as well as in-plant and in-place recycling technologies. This chapter aims to provide constructive recommendations and point out the potential research gaps for future studies. To comprehensively quantify environmental impacts associated with asphalt pavement recycling, the selected studies were reviewed and analyzed at different phases of pavement life cycle. It was found that the material, transportation, and construction phases were included, while the use, maintenance, and end-of-life phases were generally neglected. The major environmental benefit using recycled material in asphalt pavement occurs at material phase. The impacts associated with construction phase vary depending on the recycling techniques. There is a need to quantify the environmental impact of applying recycling materials in maintenance and use phase. Furthermore, considering the temporal effect of related impact categories will certainly improve the rationality of LCA methodology and the accuracy of LCA results. Uncertainty assessment of inventory data for data reliability should be considered in future studies.

Original languageEnglish (US)
Title of host publicationEco-efficient Pavement Construction Materials
PublisherElsevier Inc.
Pages77-93
Number of pages17
ISBN (Electronic)9780128189818
ISBN (Print)9780128185765
DOIs
StatePublished - Jan 21 2020

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Keywords

  • Asphalt pavement
  • Environmental impact
  • Life-cycle assessment
  • Recycling

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