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Key Construction Materials for a Streamlined Building Life Cycle Assessment: A Meta-Analysis of 100 G-SEED Projects

効率的な建物ライフサイクルアセスメントのための主要建設材料：100のG-SEEDプロジェクトのメタ分析 (AI 翻訳)

Sungmo Seo, Taehyoung Kim, Chang U Chae, Jin-chul Park

Buildingsプレプリント2025-08-26#embodied_carbon経営インパクト: コスト削減対象セクター: construction
DOI: 10.3390/buildings15173039
原典: https://doi.org/10.3390/buildings15173039

🤖 gxceed AI 要約

日本語

本論文は、韓国のグリーンビルディング認証G-SEEDの100件のLCA報告書を分析し、体化炭素の大部分を占める主要建設材料を特定した。従来の質量閾値ではなく、機能と環境影響強度に基づく分類フレームワークを提案し、レディーミクストコンクリートや構造用鋼材など12の材料カテゴリを抽出。コンクリートだけで全体質量の85%以上を占めることが判明した。この結果は、LCAの効率化に資する。

English

This paper analyzes 100 LCA reports from South Korea's G-SEED green building certification to identify key construction materials dominating embodied carbon. It proposes a function-based classification framework considering material roles and environmental impact, identifying 12 categories like ready-mixed concrete and structural steel. Concrete alone accounts for over 85% of total mass. The findings help streamline building LCA without compromising accuracy.

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

日本でもCASBEEなどの建築環境評価があり、LCAの効率化は実務上の課題である。本論文の材料分類フレームワークは、日本の建築業界でのLCA簡略化に応用可能であり、特にSSBJや有報での建物関連スコープ3対応に示唆を与える。

In the global GX context

With embodied carbon gaining attention under ISSB/CSRD and SEC climate rules, streamlining building LCA is globally relevant. This Korean study offers a practical framework to focus on high-impact materials, which can inform international green building certification bodies and corporate carbon footprinting.

👥 読者別の含意

🔬研究者:Provides a novel function-based material classification for simplifying building LCA, useful for further methodological development.

🏢実務担当者:Identifies the key materials driving embodied carbon, enabling LCA practitioners and designers to prioritize data collection for efficient certification.

🏛政策担当者:Offers evidence for updating green building standards to focus on high-impact materials, potentially reducing compliance costs.

📄 Abstract（原文）

As operational emissions decrease due to improved energy efficiency, reducing embodied carbon in buildings has become increasingly important. Life cycle assessment (LCA) is a widely used method to quantify these impacts. However, its implementation often remains data-intensive and time-consuming due to the need for detailed material inventories. This study analyzes 100 LCA reports submitted for G-SEED certification in South Korea to identify a core set of construction materials that accounts for most of the total material mass. Unlike previous approaches that relied on 99% cumulative mass thresholds, this study introduces a function-based classification framework considering both material roles and environmental impact intensity, offering a novel pathway for simplifying LCA. The findings reveal 12 key material categories, such as ready-mixed concrete, cement-based products, structural steel, wood, and interior finishes, that dominate embodied carbon contributions, with concrete alone composing over 85% of the total mass based on the analyzed G-SEED dataset. A material classification framework is then developed, organized by functional role and carbon impact. By focusing on these high-impact materials, future LCA efforts can be significantly streamlined without compromising accuracy. This approach offers data-driven guidance for LCA practitioners, designers, and green building certification bodies aiming for efficient and reliable carbon assessments.

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