A SYSTEMATIC REVIEW OF LIFE CYCLE ASSESSMENTS FOR LOW- CARBON CONSTRUCTION MATERIALS
低炭素建築材料のライフサイクルアセスメントに関する系統的レビュー (AI 翻訳)
Ahmed M. Ebrahim
🤖 gxceed AI 要約
日本語
本稿は低炭素建築材料（CLT、ヘンプクリート、ジオポリマー、再生骨材など）のLCA研究を系統的にレビュー。CO2削減効果（CLTで約9%、ジオポリマーで9-60%）と健康便益（VOCを30%削減）を示す一方、コストや規制の障壁を指摘。政策的提言として炭素価格や補助金、LCA手法の標準化を挙げる。
English
This systematic review of LCA studies on low-carbon construction materials (CLT, hempcrete, geopolymers, recycled aggregates) finds significant CO2 reduction (9% for CLT, 9-60% for geopolymers) and health co-benefits (30% fewer VOCs). Barriers include cost and regulatory gaps. Recommendations include carbon pricing, subsidies, and LCA standardization.
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CASBEEや建築物省エネ法が進むが、低炭素材料のLCA評価手法は未統一。本レビューは日本で普及が進むCLTやヘンプクリートの環境性能を定量比較する基盤となり、今後の制度設計やグリーン調達基準に示唆を与える。
In the global GX context
With global construction emissions stubbornly high, this review consolidates evidence on low-carbon alternatives. It supports standardization of LCA methods and integration of health metrics into green building certifications like LEED and BREEAM, which are increasingly referenced in ISSB and CSRD reporting.
👥 読者別の含意
🔬研究者:Provides a consolidated evidence base for further LCA and policy research on low-carbon materials.
🏢実務担当者:Helps construction firms identify and compare low-carbon material options for their supply chain and certification goals.
🏛政策担当者:Offers concrete data and policy recommendations (carbon pricing, subsidies, LCA standardization) to accelerate adoption.
📄 Abstract（原文）
The global construction industry is a predominant contributor to climate change and resource consumption; this is mainly because it uses a lot of carbon-heavy materials like concrete and steel. To systematically evaluate the true sustainability claims of alternatives, this study conducts a systematic review of Life Cycle Assessment (LCA) studies to examine the environmental and health impacts of low-carbon construction materials like cross-laminated timber (CLT), hempcrete, geopolymers, and recycled aggregates. Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, a literature search across major databases identified nine peer-reviewed publications (2010–2025) meeting strict inclusion criteria. The analysis consolidated evidence on carbon dioxide (CO2) reduction potential, health implications, and implementation challenges. Results indicate that low-carbon materials can significantly lower emissions. CLT emits approximately 9% less CO2 than conventional concrete, geopolymers reduce emissions by 9–60%, and bio-based materials like hempcrete enable carbon sequestration. Health co-benefits include improved indoor air quality (e.g., 30% fewer volatile organic compounds) and enhanced occupational safety. However, barriers such as cost, regulatory gaps, and industry resistance hinder widespread adoption. The findings affirm that low-carbon materials can reduce both a building's Global Warming Potential (GWP) and its health hazards. Key recommendations include policy improvements (e.g., carbon pricing and subsidies), standardization of LCA methods, and the integration of health metrics into green building certifications. Future research should focus on quantifying health co-benefits and developing scalable strategies adaptable to diverse economic context.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.35453/nedjr-stmech-2025-008.r1first seen 2026-06-29 06:40:41
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