住宅建築における再資源化可能資源の活用による環境負荷低減
Lowering Environmental Footprint by Using Recyclable Resources in Residential Architecture (原題)
Avi Friedman
🤖 gxceed AI 要約
日本語
建築分野が世界のCO2排出・廃棄物の約40%を占めることを踏まえ、住宅建築で利用可能な持続可能建材をライフサイクル原則に基づく評価枠組みで比較した研究。断熱コンクリート型枠(ICF)、構造断熱パネル(SIP)、エンジニアードウッド(EWP)、再生骨材コンクリート(RCA)、セルロース断熱材を、内包炭素・再資源化性・資源効率・耐久性の観点で評価。EWPは低内包炭素と耐久性・循環経済性のバランスに優れ、SIPとICFは運用エネルギー性能の改善に寄与する。ケーススタディでは合板からストランドボードへの変更で内包エネルギーを59%削減、素材変更全体で約39,010MJの省エネ効果を試算した。
English
This study compares sustainable building materials—ICFs, SIPs, engineered wood products, recycled concrete aggregate, and cellulose insulation—using a life-cycle-informed assessment framework, illustrated via the Green Grow Home case. EWPs offer a balance of low embodied carbon, durability, and circular-economy benefits, while SIPs and ICFs mainly improve operational energy performance. In the case study, switching plywood to strand board cut embodied energy by 59%, with total material changes saving roughly 39,010 MJ. The authors conclude that transitioning to sustainable construction materials is essential to lower buildings' carbon and energy footprints.
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
住宅建材の内包炭素評価は、SSBJのScope 3・バリューチェーン開示や建設業の脱炭素調達基準を検討する日本企業にとって実務的な示唆を持つ。ただし文献値の比較手法が統一されておらず、国内LCAデータベースとの接続が課題となる。
In the global GX context
Embodied-carbon comparisons of building materials feed directly into Scope 3 category 1/2 accounting under GHG Protocol and ISSB/CSRD disclosure for construction and real estate. The paper's caveat about inconsistent system boundaries highlights the broader global need for harmonized building-material LCA data (e.g., EC3, EN 15804) to make disclosure comparable.
👥 読者別の含意
🔬研究者:建材間の内包炭素・再資源化性の比較枠組みと、システム境界の不統一というLCA手法上の限界を理解できる。
🏢実務担当者:住宅・建設の調達担当が、EWPやRCA等の素材選択で内包炭素と運用エネルギーをどう両立させるかの判断材料にできる。
🏛政策担当者:建築物の内包炭素開示や建材LCAデータ標準化を検討する際の、素材別比較の実例として参照できる。
📄 Abstract（原文）
As 40% of global CO2 emissions and waste and 40% to 50% of natural resource usage come from the built environment, more urgently than ever, it is imperative that architectural design and construction practices be crafted with current environmental needs in mind. Commonly available sustainable building materials were assessed using a conceptual or decision-oriented assessment framework informed by life-cycle principles and illustrated through the Green Grow Home case study. In terms of embodied carbon, recyclability, resource efficiency, environmental impact, and durability, insulated concrete forms (ICFs), structural insulated panels (SIPs), engineered wood products (EWPs), recycled concrete aggregate (RCA), and cellulose insulation were compared. The data used in the literature-based assessment are drawn from different studies with potentially varying system boundaries. Therefore, the reported values are used as indicative evidence rather than as a normalized comparative life-cycle assessment (LCA). Within the respective literature sources, cellulose insulation and RCA are reported with embodied carbon values of 1.1 and 2.55 kgCO2e/m2. The key advantage of EWPs is that they provide a compromise between relatively low embodied carbon, durability and circular economy benefits, while SIPs and ICFs mainly help to improve operational energy performance. These principles applied to the Green Grow Home further illustrate how material substitution and selection based on life cycle can greatly minimize environmental impacts. The switch from plywood to strand board decreased the embodied energy by 59%, and total material changes were estimated to save around 39,010 MJ of energy. The paper concludes that a transition to sustainable construction materials in residential architecture is a necessary change that will lower carbon footprints and energy consumption of buildings.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.3390/architecture6040185first seen 2026-10-17 05:25:09 · last seen 2026-11-06 05:39:50
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