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Article

Estimating Greenhouse Gas Emissions from Road Construction by Considering the Regional Differences in Carbon Emission Factors of Cement: The Case of China

by
Chao Yu
1,
Liu Wu
2,*,
Yuyao Liu
3,
Kunhui Ye
3 and
Guibao Liang
4
1
China Merchants Chongqing Highway Engineering Testing Center Co., Ltd., Chongqing 400060, China
2
School of Economics and Management, Chongqing Jiaotong University, Chongqing 400074, China
3
School of Management Science and Real Estate, Chongqing University, Chongqing 400044, China
4
School of Management Science and Engineering, Chongqing Technology and Business University, Chongqing 400067, China
*
Author to whom correspondence should be addressed.
Buildings 2022, 12(9), 1341; https://doi.org/10.3390/buildings12091341
Submission received: 21 July 2022 / Revised: 21 August 2022 / Accepted: 30 August 2022 / Published: 31 August 2022
(This article belongs to the Special Issue Assessment and Optimization of Building Carbon Emissions and Energy Efficiency in China)
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Abstract

Rapid road construction and expansion in China resulted in massive GHG emissions. The carbon emission factors of raw materials, particularly cement, have a significant influence on the calculation of GHG emissions from road construction. This study estimates GHG emissions from road construction by taking into account regional differences in cement carbon emission factors. The results indicate that (1) total GHG emissions from road construction have a “U” shape from 2009 to 2019, with the highest level being 437 million t CO2e 2009 and the lowest level being 184 million t CO2e in 2017; (2) Class-Ⅳ roads account for roughly 80% of total GHG emissions from road construction; and (3) GHG emissions from road construction are shifting from east to west regions. This is the first paper to calculate GHG emissions from road construction by taking into account both road type and cement carbon emission factors. The findings of this study could provide references for transportation agencies to better understand the impacts of road construction to climate change and improve policymaking, especially for the development of road construction technologies and raw material production technologies.
Keywords: GHG emission; road construction; carbon emission factor; regional differences; China GHG emission; road construction; carbon emission factor; regional differences; China

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MDPI and ACS Style

Yu, C.; Wu, L.; Liu, Y.; Ye, K.; Liang, G. Estimating Greenhouse Gas Emissions from Road Construction by Considering the Regional Differences in Carbon Emission Factors of Cement: The Case of China. Buildings 2022, 12, 1341. https://doi.org/10.3390/buildings12091341

AMA Style

Yu C, Wu L, Liu Y, Ye K, Liang G. Estimating Greenhouse Gas Emissions from Road Construction by Considering the Regional Differences in Carbon Emission Factors of Cement: The Case of China. Buildings. 2022; 12(9):1341. https://doi.org/10.3390/buildings12091341

Chicago/Turabian Style

Yu, Chao, Liu Wu, Yuyao Liu, Kunhui Ye, and Guibao Liang. 2022. "Estimating Greenhouse Gas Emissions from Road Construction by Considering the Regional Differences in Carbon Emission Factors of Cement: The Case of China" Buildings 12, no. 9: 1341. https://doi.org/10.3390/buildings12091341

APA Style

Yu, C., Wu, L., Liu, Y., Ye, K., & Liang, G. (2022). Estimating Greenhouse Gas Emissions from Road Construction by Considering the Regional Differences in Carbon Emission Factors of Cement: The Case of China. Buildings, 12(9), 1341. https://doi.org/10.3390/buildings12091341

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