Spatiotemporal Characteristics of Global Building Material Intensity Revealed for Circular and Low-Carbon Construction
循環型・低炭素建築のための全球建築材料強度の時空間特性 (AI 翻訳)
Qiance Liu, Xin Ouyang, Wensong Zhu, Kun Sun, Jinchao Song, Xiang Li, Yunyun Li, Wu Chen, Gang Liu
🤖 gxceed AI 要約
日本語
建築物の材料強度（MIB）の全球データベースを構築し、31種類の材料についてkg/m2で統一した3051件のデータを収集・標準化。MIBは床面積や高さの増加による上昇圧力が軽量材料の使用で相殺され、現在の平均は1464.3 kg/m2で1920年以前と同程度。材料構成はレンガ・木材から鉄鋼・セメント・砂・石へシフト。このデータベースは循環型・低炭素建築への移行に資する。
English
This study compiles a global database of building material intensity (MIB) with 3051 records standardized in kg/m2 for 31 materials. It shows that despite increases in floor area and building height, the use of lightweight materials has kept aggregate MIB at 1464.3 kg/m2, comparable to pre-1920 levels. Material composition has shifted from brick and wood to steel, cement, sand, and stone. The database supports material efficiency targets, embodied carbon baselines, and circular construction planning.
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
日本では建設分野のGXとして、建材の低炭素化や循環利用が重要課題。このデータベースは、日本の建築物の材料強度のベンチマークとして活用でき、国土交通省の建築物省エネ法や、SSBJの環境情報開示におけるGHG排出量算定の参照値として有用。
In the global GX context
The database provides a harmonized global baseline for building material intensity, crucial for embodied carbon accounting under frameworks like ISSB or CSRD. It enables consistent lifecycle assessments and supports material efficiency policies in the construction sector worldwide.
👥 読者別の含意
🔬研究者:This paper offers a comprehensive MIB database and analytical framework for embodied carbon research.
🏢実務担当者:Useful for setting material efficiency benchmarks and calculating embodied carbon in construction projects.
🏛政策担当者:Informs building codes and carbon reduction targets in the construction sector.
📄 Abstract（原文）
Quantifying the material intensity of buildings (MIB) is fundamental for built environment stock accounting, construction resource and waste management, and embodied carbon assessment. However, existing MIB data reported in the literature are often sparse, heterogeneous, and scattered across archetypes, which hinders comparability, quality checks, and harmonization. Here, we compiled a global MIB database containing 3051 MIB records in a unified form measured in kg/m2 for 31 types of construction materials, based on both secondary and primary data from multiple sources. Applying a mean-absolute-deviation (MAD) rule to generate archetype-specific general MIBs, we revealed that the upward pressure on MIB from increases in floor area and building height has been partly offset by the use of light-weight materials, yielding a current aggregate MIB of 1464.3 kg/m2 that is comparable to the pre-1920 levels. Global building material composition shifted markedly away from brick and wood and toward higher shares of steel, cement, sand, and stone, alongside sizable heterogeneity across archetypes, regions, and periods. This expanded, standardized, and harmonized global MIB database can help inform material efficiency targets, embodied carbon baselines, and stock-aware planning for selective demolition, procurement, and renovation in a circular and low-carbon construction transition.
🔗 Provenance — このレコードを発見したソース
- openaire https://doi.org/10.1021/acs.est.5c05684first seen 2026-06-29 04:47:58
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