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内装処理における音響吸収と体化炭素のトレードオフの定量化

Quantifying trade-offs between acoustic absorption and embodied carbon in interior treatments (原題)

Milena J. Bem, Kristen Murphy

The Journal of the Acoustical Society of Americaジャーナル2026-08-01#炭素会計Origin: US経営インパクト: コスト削減対象セクター: construction
DOI: 10.1121/10.0044930
原典: https://doi.org/10.1121/10.0044930

🤖 gxceed AI 要約

日本語

建築・建設部門は世界の炭素排出の約37%を占め、体化炭素が重要な割合を占める。本研究は、音響材料の選択が体化炭素に与える影響を評価する枠組みを提案し、LCAを用いて音響性能と体化炭素のトレードオフを定量化する。具体的には、一般的な吸音材料のGWP（A1-A3）をEPDから算出し、博物館ギャラリーの改修シナリオを比較した。結果、材料選択と数量の最適化により、音響性能を維持しつつ炭素排出を削減できることを示した。

English

The AEC sector contributes ~37% of global carbon emissions, with embodied carbon being significant. This study proposes a framework to compare acoustic performance and embodied carbon using LCA for reverberation control. It calculates GWP (A1-A3) of common acoustic materials from EPDs and applies LCA to museum gallery retrofit scenarios, finding strategies to optimize carbon footprint and acoustic performance.

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

日本の建築業界では、2025年度以降の省エネ基準適合義務化や、ゼロエネルギービル（ZEB）の普及が進む中、体化炭素の考慮はまだ十分ではない。本研究成果は、建築音響設計における炭素排出削減の具体的な手法を提供し、日本の建築設計実務におけるLCA活用の拡大に寄与する可能性がある。

In the global GX context

Globally, the building sector's embodied carbon is gaining attention in climate disclosure frameworks like TCFD and CSRD. This study provides a practical framework for integrating embodied carbon into acoustic design decisions, which is relevant for sustainable building certifications (LEED, BREEAM) and corporate sustainability reporting.

👥 読者別の含意

🔬研究者:Provides a methodological framework for LCA-based trade-off analysis in building materials, useful for further research in sustainable construction.

🏢実務担当者:Acousticians and building designers can use the framework to select materials that reduce embodied carbon without compromising acoustic performance.

🏛政策担当者:Highlights the need for embodied carbon regulations in building codes and the importance of EPD data availability.

📄 Abstract（原文）

The Architecture, Engineering, and Construction (AEC) sector contributes roughly 37% of global carbon emissions, with embodied carbon from building materials representing a significant share. One way acousticians can influence embodied carbon emissions is through thoughtful selection of acoustic treatments, yet the carbon implications of material choices are an often-overlooked design factor, and little is currently known about how to quantify and compare design decisions from an acoustical and embodied carbon perspective. This study provides a proposed framework to compare acoustical performance and embodied carbon using a Life Cycle Assessment (LCA) framework for reverberation control. First, this study shows the results of the calculated Global Warming Potential (GWP, A1–A3) of several common surface-applied acoustically absorptive materials (such as fabric-wrapped panels, acoustical ceiling tiles, etc.), compiled from available Environmental Product Declarations (EPDs) and verified databases. Second, an LCA was conducted of several theoretical retrofit scenarios applied to a museum gallery case study. The different scenarios represent different quantities and combinations of acoustically absorptive treatments and compare the design’s A1–A3 emissions and resulting reverberation time (RT). With this example, this study aims to find strategies to help acousticians make decisions to optimize a design’s carbon footprint and acoustic performance.

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