Life Cycle Assessment for CO2 Emissions and Mitigation Pathways During the Expressway Construction Phase: A Case Study in Central China
中国中部の高速道路建設段階におけるCO2排出と削減経路のライフサイクル評価 (AI 翻訳)
Shuqi Xue, Qianzhong Xiang, Yuanyuan Liu, Yuanqing Wang, Rong Tian, Yuehua Chen
🤖 gxceed AI 要約
日本語
中国中部の高速道路建設プロジェクトを対象に、CO2排出の詳細な原単位分析を実施。橋梁・カルバートが最大の排出源であり、材料排出が全体の89.44%を占めることが判明。純電気ダンプトラック導入による排出削減効果を環境経済両面で評価し、50%普及率で輸送排出を9.98%削減可能と実証。本研究は交通インフラ分野の深い脱炭素化に再現可能な科学的根拠を提供する。
English
This study conducts a fine-grained CO2 emission accounting for an expressway project in central China, identifying bridges/culverts as the hottest carbon hotspot, with material emissions dominating at 89.44%. It evaluates four mitigation technologies, showing that resin-bonded gravel sound barriers reduce emissions by 73.26%, and 30-ton EV dump trucks at 50% penetration cut transportation emissions by 9.98% while remaining financially resilient even under a 30% drop in diesel prices. The work provides a replicable decision-making basis for deep decarbonization of transport infrastructure.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
中国の高速道路建設における具体的な排出実態と削減対策の実証データを提供。日本のSSBJ対応やインフラ分野の脱炭素計画（国土交通省グリーン社会実現）において、建設段階の排出原単位や電動化の経済性評価の参考となる。
In the global GX context
This paper offers granular emission factors and mitigation technology assessments for expressway construction, directly supporting global decarbonization of infrastructure under frameworks like ISSB/CSRD. The dual environmental-economic evaluation of electric machinery provides a replicable model for transition finance in construction sectors worldwide.
👥 読者別の含意
🔬研究者:Provides a detailed lifecycle carbon accounting methodology and empirical emission factors for expressway construction subprojects, useful for building bottom-up databases.
🏢実務担当者:Demonstrates the cost-effectiveness of EV dump trucks and other mitigation technologies, offering actionable data for construction firms' decarbonization roadmaps.
🏛政策担当者:Offers quantitative evidence for prioritizing carbon hotspots (e.g., bridges) and evaluating subsidy or mandate designs for electric construction equipment.
📄 Abstract（原文）
Reducing carbon emissions from highway construction is vital for mitigating climate change. Based on an expressway project in central China, this study conducted a fine-grained CO2 emission accounting and analysis. The findings reveal that bridges and culverts rank first in emissions among all subprojects, emerging as a “carbon hotspot” with an exceptionally high emission intensity, followed by subgrade and pavement. Additionally, traffic safety facilities, accounting for 6.40% of total emissions, are also not negligible. Regarding emission sources, material emissions exhibit an extreme dominance at 89.44%, whereas off-road machinery and transport vehicles demonstrate distinct patterns of input-emission asymmetry and single-vehicle-type dominance, respectively. Consequently, this study delineates decarbonization pathways, quantitatively verifies the low-carbon efficacy of four mitigation technologies, and focuses on evaluating the environmental-economic dual feasibility of substituting core equipment with pure electric alternatives. The results demonstrate that the resin-bonded gravel sound barrier achieves an emission reduction rate of 73.26%; furthermore, under a 50% penetration rate, deploying 30-ton class EV dump trucks can cut transportation emissions by 9.98%, maintaining exceptional financial resilience even under a 30% plunge in diesel prices. This study provides a replicable, scientific decision-making basis for the deep decarbonization of the transportation infrastructure sector.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/app16146984first seen 2026-07-16 05:31:14
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