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Int. J. Environ. Res. Public Health 2016, 13(7), 632; doi:10.3390/ijerph13070632

The Greenhouse Gas Emission from Portland Cement Concrete Pavement Construction in China

1
Key Laboratory Special Area Highway Engineering of Ministry of Education , Chang’an University, Xi’an 710064, China
2
School of the Civil Engineering, Liverpool John Moores University, Peter Jost Enterprise Centre, Byrom Street, Liverpool L3 3AF, UK
*
Author to whom correspondence should be addressed.
Academic Editors: Derek Clements-Croome and Harry Timmermans
Received: 12 April 2016 / Revised: 30 May 2016 / Accepted: 13 June 2016 / Published: 24 June 2016
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Abstract

This study proposes an inventory analysis method to evaluate the greenhouse gas (GHG) emissions from Portland cement concrete pavement construction, based on a case project in the west of China. The concrete pavement construction process was divided into three phases, namely raw material production, concrete manufacture and pavement onsite construction. The GHG emissions of the three phases are analyzed by a life cycle inventory method. The CO2e is used to indicate the GHG emissions. The results show that for 1 km Portland cement concrete pavement construction, the total CO2e is 8215.31 tons. Based on the evaluation results, the CO2e of the raw material production phase is 7617.27 tons, accounting for 92.7% of the total GHG emissions; the CO2e of the concrete manufacture phase is 598,033.10 kg, accounting for 7.2% of the total GHG emissions. Lastly, the CO2e of the pavement onsite construction phase is 8396.59 kg, accounting for only 0.1% of the total GHG emissions. The main greenhouse gas is CO2 in each phase, which accounts for more than 98% of total emissions. N2O and CH4 emissions are relatively insignificant. View Full-Text
Keywords: highway engineering; greenhouse gas (GHG); Portland cement concrete pavement; construction process highway engineering; greenhouse gas (GHG); Portland cement concrete pavement; construction process
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Ma, F.; Sha, A.; Yang, P.; Huang, Y. The Greenhouse Gas Emission from Portland Cement Concrete Pavement Construction in China. Int. J. Environ. Res. Public Health 2016, 13, 632.

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