title: The Greenhouse Gas Emission from Portland Cement Concrete Pavement Construction in China.
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.
authors.affiliation: Key Laboratory Special Area Highway Engineering of Ministry of Education , Chang'an University, Xi'an 710064, China. mafeng@chd.edu.cn.
authors.forename: Feng
authors.initials: F
authors.lastname: Ma
authors.affiliation: Key Laboratory Special Area Highway Engineering of Ministry of Education , Chang'an University, Xi'an 710064, China. amspaper@126.com.
authors.forename: Aimin
authors.initials: A
authors.lastname: Sha
authors.affiliation: Key Laboratory Special Area Highway Engineering of Ministry of Education , Chang'an University, Xi'an 710064, China. ppyangchd@sina.com.
authors.forename: Panpan
authors.initials: P
authors.lastname: Yang
authors.affiliation: School of the Civil Engineering, Liverpool John Moores University, Peter Jost Enterprise Centre, Byrom Street, Liverpool L3 3AF, UK. Y.Huang@ljmu.ac.uk.
authors.forename: Yue
authors.initials: Y
authors.lastname: Huang
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002245:Carbon Dioxide / Q000032:analysis*; D002681:China; D060389:Construction Industry; D003252:Construction Materials / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods*; D017752:Greenhouse Effect
chemical_list: D000393:Air Pollutants; D002245:Carbon Dioxide
keywords: Portland cement concrete pavement; construction process; greenhouse gas (GHG); highway engineering