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Title:

Estimating Life-Cycle CO₂ Emissions of Urban Road Corridor Construction: A Case Study in Xi'an, China

Accession Number:

01698390

Record Type:

Component

Abstract:

The carbon dioxide (CO₂) emissions characteristics of urban roads and related municipal construction are important parameters for estimating carbon emissions from urban transportation. This paper obtained engineering statistics on the road, water supply, drainage, power pipeline and illumination projects for a main urban road (Qinling) located in the High-tech Zone, Xi’an, China. The construction process, machinery type and work time, and transportation distance were determined from documents of construction organization and approximately estimated norm of municipal project. Further, life-cycle assessment (LCA) was applied to estimate the life-cycle CO₂ emissions for Qinling, which were compared with those for a reconstruction project (Route 35) in New Jersey, USA. The results show the following: (1) The road project accounts for 55.91% of CO₂ emissions, the largest source among all subprojects in Qinling road construction; (2) The CO₂ emissions of materials in the surface layer for Qinling road construction are lower than that of materials in Route 35, while the emissions of materials in the base layer are higher; (3) The CO₂ emissions of on-site construction for Qinling road construction are much higher than those for Route 35 construction because of longer work times for machinery during the former. (4) The CO₂ emissions for Qinling road construction have the greatest sensitivity to the CO₂ emissions factor of lime. Strategies, like adopting advanced production technologies for lime and cement and optimizing combined design and construction organization, can significantly reduce CO₂ emissions for urban road corridors construction.

Supplemental Notes:

This paper was sponsored by TRB committee AF000 Design and Construction Group.

Report/Paper Numbers:

19-02610

Language:

English

Corporate Authors:

Transportation Research Board

Authors:

Li, Di
Wang, Yuanqing
Liu, Yuanyuan
Sun, Sijia
Gao, Yanan

Pagination:

8p

Publication Date:

2019

Conference:

Transportation Research Board 98th Annual Meeting

Location: Washington DC, United States
Date: 2019-1-13 to 2019-1-17
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Geographic Terms:

Xi'an (China)

Subject Areas:

Construction; Highways; Pavements

Source Data:

Transportation Research Board Annual Meeting 2019 Paper #19-02610

Files:

TRIS, TRB, ATRI

Created Date:

Dec 7 2018 9:41AM