Flow Analysis of Construction Materials and Environmental Transition Pathways to Decarbonize Residential Buildings
建設資材のフロー分析と住宅建築物の脱炭素化に向けた環境移行経路 (AI 翻訳)
Tasnim Khalaili, A. Abu-Rayash
🤖 gxceed AI 要約
日本語
本研究はBIMとEC3を統合し、住宅建築物の製品段階における地球温暖化係数(GWP)と一次資源使用量を定量化する。炭素集約型、エネルギー移行型、グリーン型の3つの材料シナリオを比較し、グリーンシナリオでGWPを42%削減できることを示した。壁と床が主要な排出源であり、軽量コンクリート壁の採用で28%のGWP削減が可能である。この枠組みは、より持続可能な建築設計のための材料選択を支援する。
English
This study integrates BIM in Revit with EC3 to quantify GWP and resource use for a residential building across carbon-intensive, energy transition, and green material scenarios. Results show a 42% reduction in embodied carbon for the green scenario (381 tCO2e vs 649 tCO2e). Walls and floors are dominant contributors; substituting lightweight concrete gives a 28% reduction. The framework supports informed material selection for sustainable design.
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
日本では2025年以降のZEH基準厳格化など建築物の脱炭素化が進んでおり、BIM+LCAの実務活用が注目されている。本論文の材料シナリオ比較手法は、日本の建設業界における資材選定と環境審査に応用可能であるが、対象地域が乾燥地帯であるため気候条件の違いに注意が必要。
In the global GX context
Global building decarbonization efforts, such as the EU's Level(s) framework and LEED/BREEAM, increasingly require embodied carbon assessment. This study provides a practical BIM+EC3 workflow for comparing material scenarios, directly applicable to projects seeking green building certification or meeting Scope 3 supply chain targets.
👥 読者別の含意
🔬研究者:Provides a replicable BIM+EC3 methodology for comparing embodied carbon across material scenarios, useful for LCA researchers and building performance analysts.
🏢実務担当者:Offers construction firms and architects a quantifiable approach to select low-carbon materials, supporting green building certification and client sustainability requirements.
🏛政策担当者:Demonstrates potential for significant embodied carbon reductions through material substitution, informing building code updates and procurement policies.
📄 Abstract（原文）
Rapid urbanization and global growth have made sustainable infrastructure a dire necessity. In hot arid regions, rising heat index levels intensify cooling demand and accelerate construction activity. Reducing emissions from concrete is critical to mitigate climate change. This study integrates BIM in Revit with EC3 to quantify GWP and total use of renewable/non-renewable primary resources at the product stage. A residential building is used to evaluate variations in environmental performance across multiple material scenarios (carbon intensive, energy transition, and green scenarios). Results reveal substantial differences in embodied carbon across scenarios. The carbon intensive scenario accounts for a total GWP of 649 tCO2e, while the green scenario reduces emissions to 381 tCO2e, which represents a reduction of 42%. Walls and floors are identified as the dominant contributors to embodied carbon due to high concrete volumes, with raw material extraction accounting for the largest share of emissions. Substituting conventional concrete walls with lightweight concrete walls reduces the total GWP by 28%. In addition, planed timber exhibits near zero emissions due to biogenic carbon storage and shows the highest renewable primary energy use among assessed materials. The proposed framework provides a practical approach for evaluating embodied carbon emissions and supports informed material selection for more sustainable building design.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.3390/buildings16071277first seen 2026-06-29 06:52:47
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