Assessing Renovation-Avoided Carbon Emissions: A Comparative Life Cycle Assessment and the Influence of LOD on a Building Use Conversion Project
改修による炭素排出回避の評価：建物用途転換プロジェクトにおける比較ライフサイクルアセスメントとLODの影響 (AI 翻訳)
Doreen Steven Mlote, Sezgi Yalçınkaya, F. Ortner
🤖 gxceed AI 要約
日本語
既存建物の改修（アダプティブ・リユース）が新築と比較して68%の排出削減をもたらし、コンクリートや鉄骨の再利用が93%以上の削減に寄与することをLCAで実証。LOD 200と350で結果が45.8%変動することを示し、LCA利用時のLOD定義の重要性を強調。
English
This comparative LCA shows that renovating an existing building instead of demolishing and rebuilding reduces emissions by 68%, with concrete and steel reuse accounting for over 93% of savings. It also reveals that LOD 350 vs LOD 200 causes a 45.8% variation in results, underscoring the need for clear LOD definitions in carbon-reduction decisions.
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
日本の建築分野では、SSBJ開示やカーボンニュートラル目標に向けて、改修による炭素削減の定量化が重要。本研究成果は、改修の環境価値を示すエビデンスとして、不動産・建設企業の開示や投資家対応に活用できる。
In the global GX context
Globally, this study provides empirical evidence for adaptive reuse as a carbon-reduction strategy, relevant to TCFD/ISSB disclosures and net-zero targets. It also highlights methodological considerations (LOD) that affect LCA reliability, informing best practices for carbon accounting in the built environment.
👥 読者別の含意
🔬研究者:Provides a benchmark for LCA on adaptive reuse and quantifies LOD impact on results.
🏢実務担当者:Offers actionable insights for prioritizing renovation and defining LOD in carbon assessments.
🏛政策担当者:Supports policies promoting adaptive reuse with quantified carbon savings.
📄 Abstract（原文）
Renovating existing buildings has emerged as a decisive means of mitigating environmental impacts from buildings. However, estimating life-cycle environmental impacts remained challenging, as rapid early-stage assessments often differed substantially from results from detailed models. This study conducted a comparative Life Cycle Assessment (LCA) of an existing building that underwent adaptive reuse, comparing embodied carbon savings against a demolition and new-build scenario. It isolated the intrinsic material burdens and end-of-life processes of different design scenarios, offering insights into the environmental implications of choosing renovation and adaptive reuse versus demolition and rebuilding. The results demonstrated a 68% reduction in emissions when renovation was chosen and highlighted the relative contributions of different building stages and materials. Significant carbon savings of more than 2,500 metric tons CO₂e were measured, stemming mainly from the retention and reuse of high-impact structural materials such as concrete and steel, which together accounted for more than 93% of the total savings. This study also assessed the impact of Level of Development (LOD) on LCA results, demonstrating that a highly detailed building model at LOD 350, compared with LOD 200, produced a 45.8% variation in results. This contribution highlighted the importance of clearly defining LOD levels when using LCA results to support carbon-reduction decisions. Ultimately, this study provided an empirical case-study benchmark for future LCA studies on adaptive reuse projects, and offered actionable insights for architects, engineers, and policymakers seeking to prioritise adaptive-reuse strategies and appropriate LOD definitions as pathways to accurately meet carbon-reduction targets and support a net-zero future.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://abc2.net/index.php/journal/article/download/109/73first seen 2026-08-01 06:32:57 · last seen 2026-08-02 06:25:46
🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。