Carbon Footprint Reduction through Cement Substitution in Structural Concrete
構造用コンクリートにおけるセメント代替による炭素フットプリント削減 (AI 翻訳)
Prakriti Verma, Bhojram Sahu, Ashok Kumar Singh
🤖 gxceed AI 要約
日本語
本論文は、構造用コンクリートのセメントをフライアッシュ、GGBS、シリカフューム、メタカオリンなどの補助セメント材料（SCM）で部分的に置き換えることによる炭素フットプリント削減の可能性を調査。実験とLCAの併用により、GGBS40～50%置換で最大50%のCO2削減、フライアッシュ30%で30%削減を確認。コスト効率の高い低炭素コンクリート設計の実現可能性を示した。
English
This paper investigates carbon footprint reduction of structural concrete by partially replacing cement with SCMs like fly ash, GGBS, silica fume, and metakaolin. Using experiments and LCA, it finds GGBS at 40-50% replacement reduces CO2 by up to 50% while maintaining strength, and fly ash at 30% yields 30% reduction. It highlights cost-effective low-carbon concrete design.
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
日本の建設業界はカーボンニュートラルに向け、コンクリートの低炭素化が急務。本成果は、国内のセメント代替材活用と性能規定型仕様の普及に貢献する。
In the global GX context
Concrete decarbonization is critical globally. This study provides actionable SCM substitution strategies and LCA data that can directly inform ISSB/CSRD-aligned construction material disclosures and procurement decisions.
👥 読者別の含意
🔬研究者:Provides systematic experimental and LCA data on SCM substitution performance for low-carbon concrete mix design.
🏢実務担当者:Offers cost-effective strategies to reduce concrete carbon footprint without compromising structural integrity.
🏛政策担当者:Supports policy frameworks promoting SCM use and performance-based specifications in construction standards.
📄 Abstract（原文）
This research paper investigates the potential for reducing the carbon footprint of structural concrete through partial replacement of Ordinary Portland Cement (OPC) with Supplementary Cementitious Materials (SCMs), including fly ash, Ground Granulated Blast Furnace Slag (GGBS), silica fume, and metakaolin. Cement production accounts for approximately 7–8% of global anthropogenic CO₂ emissions, with the majority arising from limestone calcination and fossil fuel combustion during clinker production. This study employs a combined experimental and analytical methodology to evaluate the mechanical performance, durability characteristics, and embodied carbon of concrete mixes at varying SCM substitution levels (10–50%). Results demonstrate that GGBS at 40–50% replacement achieves the most favorable balance between embodied carbon reduction (up to 50%) and long-term compressive strength (46–53 MPa at 90 days). Fly ash at 30% substitution reduces CO₂ emissions by 30% while maintaining adequate 28-day and long-term strengths. Silica fume, though offering superior mechanical performance, yields only a 10% emissions reduction at typical 10% replacement levels. A life cycle assessment (LCA) framework quantifies Global Warming Potential (GWP) reductions across all mixes, confirming that strategic SCM integration can deliver significant decarbonization without compromising structural integrity. The study identifies GGBS and fly ash as cost-effective interventions and highlights the critical role of optimized mix design, curing conditions, and performance-based specifications in enabling widespread adoption of low-carbon concrete in structural applications.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.32628/ijsrce261031first seen 2026-06-29 06:45:49
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