Evaluating the Circularity and Carbon Benefits of End-of-Life Timber Structures: An Integrated BIM-LCA Approach
木造建築物の廃棄時における循環性と炭素便益の評価：BIM-LCA統合アプローチ (AI 翻訳)
Ya-ling Yi, Youssef Haddi, Haoyu Huang
🤖 gxceed AI 要約
日本語
本研究は、BIMとLCAを統合し、木造建築物の廃棄時における再利用・リサイクル可能性を評価した。接合部での材料損失を考慮し、正味回収可能な木材量を算出。構造再利用が最大の炭素便益（-128.7 tCO2e）をもたらし、接合部損失の削減がGWP削減を最大19.7%向上させることを示した。
English
This study integrates BIM and LCA to evaluate the end-of-life reuse and recycling potential of timber structures. Accounting for material losses at connections, it quantifies net recoverable timber and finds structural reuse yields the greatest carbon benefit (-128.7 tCO2e). A Design for Disassembly sensitivity analysis shows reducing connection losses by 50% can increase GWP savings by up to 19.7%.
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
日本の建設業界では、脱炭素社会に向けて木材利用の促進が進んでおり、本研究成果は木造建築の循環型利用を後押しする。SSBJ開示やサプライチェーン排出量算定においても、木材の炭素貯蔵効果を定量的に示す手法として有用である。
In the global GX context
Globally, the construction sector faces pressure to reduce embodied carbon, and this study provides a replicable method for quantifying circularity benefits of timber. It aligns with ISSB/CSRD disclosure trends by offering a data-driven approach to assess end-of-life scenarios, supporting transition to a circular economy.
👥 読者別の含意
🔬研究者:Provides a methodological framework for integrating BIM and LCA to assess circularity and carbon benefits of timber structures.
🏢実務担当者:Offers actionable insights for construction firms to optimize connection design and material recovery strategies for carbon savings.
🏛政策担当者:Highlights the importance of design for disassembly and circular economy policies in reducing construction sector emissions.
📄 Abstract（原文）
As the construction industry seeks to reduce carbon emissions, timber has emerged as a key material due to its capacity for biogenic carbon storage and end-of-life (EoL) reuse. However, assessing the practical circularity potential of timber structures remains challenging. This is largely because recovered components suffer geometric and material losses at their connection points. This study evaluates the EoL reuse and recycling potential of a multi-storey timber building by combining Building Information Modelling (BIM) with Life Cycle Assessment (LCA). A digital model was used to quantify structural elements (beams, columns, and walls), explicitly accounting for material losses at connections to calculate the net recoverable timber. The recovered material (837.39 m3) was assigned to various cascading use scenarios based on material strength: structural reuse, non-structural reuse, engineered wood production, and energy recovery. To align with ISO 14044 principles, a functional equivalence factor (Q-factor) was applied to measure the environmental benefits of substituting new materials. Results indicate an overall material loss of 16.62% due to connections. Among the evaluated EoL pathways, structural reuse yielded the greatest net carbon benefit (−128.7 tCO2e), significantly outperforming lower-value alternatives such as energy recovery (−29.3 tCO2e). Additionally, a Design for Disassembly (DfD) sensitivity analysis showed that reducing connection losses by 50% could increase net global warming potential (GWP) savings by up to 19.7%. In conclusion, connection design is a critical factor in enabling timber circularity. Furthermore, combining BIM material tracking with LCA methods offers a practical approach to quantifying the long-term carbon benefits of timber reuse strategies.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.3390/su18168113first seen 2026-08-14 05:41:16
🔔 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。