テヘランの中層住宅外壁の比較LCA：従来材料と炭素吸収材料の建設・運用時の炭素排出評価
A comparative LCA of mid-rise residential building envelopes in Tehran: evaluating carbon emissions of conventional and carbon-absorbing materials in construction and operation (原題)
Amirhossein Janzadeh, Sasan Moradi, Maryam Armaghan
🤖 gxceed AI 要約
日本語
本研究は、イランのテヘランにおける中層住宅の外壁材料について、従来の4種類と炭素隔離能を持つヘンプクリートを比較し、ライフサイクルアセスメント（LCA）と建物エネルギーシミュレーションを用いて30年間の炭素排出を評価した。結果、LECA壁が最も低いライフサイクル炭素排出（2,192 kg CO2e/m2）を示し、ヘンプクリートはバイオジェニック炭素隔離により正味排出を2,209 kg CO2e/m2に削減した。従来の焼成粘土壁と比較して、LECAとヘンプクリートは総排出をそれぞれ約4.8%と5.7%削減した。
English
This study compares four conventional wall systems and a hempcrete-based alternative for mid-rise residential buildings in Tehran, using LCA and building energy simulation to assess 30-year carbon emissions. The LECA wall achieved the lowest life-cycle emissions (2,192 kg CO2e/m2), while hempcrete reduced net emissions to 2,209 kg CO2e/m2 through biogenic carbon sequestration. Compared with conventional fired-clay, LECA and hempcrete cut total emissions by 4.8% and 5.7%, respectively.
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、LCAやカーボンニュートラルに向けた建材選定が重要視されており、本研究成果は低炭素材料の選定根拠として参考になる。ただし、イランの気候・材料事情に基づくため、日本の気候や建材規格に合わせた追加検討が必要。
In the global GX context
This study contributes to global building LCA literature by quantifying the carbon benefits of bio-based materials like hempcrete in a hot-dry climate, offering insights for low-carbon construction practices. It aligns with international efforts to reduce embodied carbon in buildings, supporting ISSB and other disclosure frameworks that require carbon accounting.
👥 読者別の含意
🔬研究者:Provides comparative LCA data for building envelope materials in a hot-dry climate, useful for expanding LCA databases and methodology.
🏢実務担当者:Offers evidence for selecting low-carbon envelope materials in similar climates, aiding sustainability reporting and green building certifications.
🏛政策担当者:Highlights potential of bio-based materials for building decarbonization, informing building codes and incentives.
📄 Abstract（原文）
Building envelope materials play a crucial role in reducing life cycle carbon emissions and improving environmental sustainability. This study evaluates the life cycle environmental performance of four conventional wall systems used in Iran and an alternative hempcrete-based wall with carbon sequestration potential. Life cycle assessment (LCA) and building energy simulation were conducted using One Click LCA and DesignBuilder to quantify embodied and operational carbon over a 30-year service life. Results indicate that the LECA-based wall achieved the lowest life cycle carbon emissions (2,192 kg CO2e/m2), while the fired-clay wall showed the highest (2,303 kg CO2e/m2). Hempcrete reduced net emissions to 2,209 kg CO2e/m2 through biogenic carbon sequestration. Compared with the conventional fired-clay system, LECA and hempcrete reduced total life cycle carbon emissions by approximately 4.8% and 5.7%, respectively. These findings demonstrate that low-carbon and bio-based envelope materials can significantly improve the environmental performance of residential buildings in Iran’s hot-dry climate.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1080/23789689.2026.2709099first seen 2026-08-30 04:44:38
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