Show simple item record

dc.contributor.authorJiang, R.
dc.contributor.authorWu, C.
dc.contributor.authorSong, Yongze
dc.contributor.authorWu, Peng
dc.date.accessioned2021-02-26T04:39:34Z
dc.date.available2021-02-26T04:39:34Z
dc.date.issued2020
dc.identifier.citationJiang, R. and Wu, C. and Song, Y. and Wu, P. 2020. Estimating carbon emissions from road use, maintenance and rehabilitation through a hybrid life cycle assessment approach – A case study. Journal of Cleaner Production. 277: Article No. 123276.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/82705
dc.identifier.doi10.1016/j.jclepro.2020.123276
dc.description.abstract

© 2020 Elsevier Ltd Road infrastructure is an important source of carbon emissions. To estimate the carbon emissions of roads, life cycle assessment (LCA) methods are widely used. Due to budget constraints, road maintenance and rehabilitation (M&R) is preferred by road agencies over new construction. However, existing LCA studies on roads have limited considerations on the emissions from the use and M&R phases. This study aims to propose and illustrate a structured hybrid LCA approach that can be adopted by road agencies to evaluate carbon emissions of the use and M&R phases of roads. A path exchange LCA method and a tiered hybrid LCA method are integrated in the proposed approach. To illustrate the proposed approach, a case study of a road network in Western Australia is conducted, which includes 17,764 road segments. The results show that from 2017 to 2026, the GWP of use and M&R phases is increased from 467.8 t CO2-e/km to 589.5 t CO2-e/km·with an increasing trend. The use phase has much higher global warming potential than the M&R phase during the service life of roads. The results are the most sensitive to annual average daily traffic (AADT). In addition, heavy traffic roads in the metropolitan area and freeways with AADT higher than 20,000 are identified to be the most carbon intensive. The proposed approach is believed to have better accuracy when compared to a process-based approach and a tiered approach, which provide the results of 128.6–164.4 t CO2-e/km and 468.0–608.9 t CO2-e/km, respectively. The results can provide implications for road authorities to evaluate their priorities when allocating limited M&R funds to achieve sustainable objectives.

dc.languageEnglish
dc.publisherELSEVIER SCI LTD
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/DE170101502
dc.subjectScience & Technology
dc.subjectTechnology
dc.subjectLife Sciences & Biomedicine
dc.subjectGreen & Sustainable Science & Technology
dc.subjectEngineering, Environmental
dc.subjectEnvironmental Sciences
dc.subjectScience & Technology - Other Topics
dc.subjectEngineering
dc.subjectEnvironmental Sciences & Ecology
dc.subjectLife cycle assessment (LCA)
dc.subjectHybrid
dc.subjectRoads
dc.subjectMaintenance and rehabilitation (M&R)phase
dc.subjectUse phase
dc.subjectENVIRONMENTAL IMPACTS
dc.subjectPAVEMENT CONSTRUCTION
dc.subjectASSESSMENT MODEL
dc.subjectGHG EMISSIONS
dc.subjectGAS EMISSIONS
dc.subjectREAL-TIME
dc.subjectMETHODOLOGY
dc.subjectMANAGEMENT
dc.subjectINFRASTRUCTURE
dc.subjectINVENTORY
dc.titleEstimating carbon emissions from road use, maintenance and rehabilitation through a hybrid life cycle assessment approach – A case study
dc.typeJournal Article
dcterms.source.volume277
dcterms.source.issn0959-6526
dcterms.source.titleJournal of Cleaner Production
dc.date.updated2021-02-26T04:39:34Z
curtin.departmentSchool of Design and the Built Environment
curtin.accessStatusFulltext not available
curtin.facultyFaculty of Humanities
curtin.contributor.orcidSong, Yongze [0000-0003-3420-9622]
curtin.contributor.orcidWu, Peng [0000-0002-3793-0653]
curtin.identifier.article-numberARTN 123276
dcterms.source.eissn1879-1786
curtin.contributor.scopusauthoridSong, Yongze [57200073199]
curtin.contributor.scopusauthoridWu, Peng [55175462200]


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record