EcoMarble: macro-performance and carbon footprint optimization of concrete using cement-substituted Al-Kharj marble dust
EcoMarble: セメント代替アルカージ大理石粉を用いたコンクリートのマクロ性能とカーボンフットプリント最適化 (AI 翻訳)
S. Almuaythir, A. Ahmed
🤖 gxceed AI 要約
日本語
本研究は、セメントを5-30%大理石粉で代替したコンクリートの機械的特性とLCAを評価。15%代替が最適で、圧縮強度5.4%向上、CO2排出量34%削減（285 kg CO2-eq/m3）、コスト30%低減を達成。廃棄物有効活用による持続可能な建設材料としての可能性を示す。
English
This study investigates cement substitution with marble dust (5-30%) in concrete. Optimal 15% replacement improves compressive strength by 5.4% and reduces carbon emissions by 34% (285 vs 430 kg CO2-eq/m3) while cutting cement cost by 30%. Marble dust valorization offers a practical low-carbon concrete solution.
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
日本の建設業界でもコンクリートの低炭素化は喫緊の課題。本論文は廃大理石粉という未利用資源の有効活用とCO2削減を同時に実現する手法を示し、日本のカーボンニュートラル政策や建設廃棄物削減に示唆を与える。
In the global GX context
Concrete decarbonization is a global priority. This paper provides LCA-backed evidence for marble dust as a cement substitute, achieving 34% CO2 reduction. It supports circular economy and low-carbon construction, relevant to ISSB and transition finance discussions on building materials.
👥 読者別の含意
🔬研究者:Demonstrates optimal marble dust substitution ratio (15%) balancing mechanical and environmental performance via LCA.
🏢実務担当者:Provides a ready-to-apply formula for reducing concrete's carbon footprint by 34% using locally available waste marble dust.
🏛政策担当者:Illustrates a win-win waste management and emission reduction strategy that can be incentivized through green procurement or carbon pricing.
📄 Abstract（原文）
Abstract This study investigates the sustainable utilization of Al-Kharj marble dust (MD) as a cement substitute in concrete, evaluating its effects on mechanical properties and environmental impact. Cement was partially replaced with 5–30 % marble dust by weight, and the resulting mixtures were assessed through comprehensive experimental methods including compressive strength (ASTM C39), flexural strength (ASTM C78), tensile strength tests, porosity measurement, and life cycle assessment (LCA) using SimaPro software. The results demonstrate that 15 % marble dust replacement provides the optimal performance, achieving 26.41 MPa compressive strength (+5.4 % vs. control), 14.55 MPa flexural strength (+2.1 %), and 9.44 MPa tensile strength, while reducing porosity by 68 %. Environmental analysis revealed a 34 % reduction in carbon emissions (285 vs. 430 kg CO2-eq/m3) and a 30 % decrease in cement cost. The findings establish marble dust as a viable sustainable material that enhances concrete performance while reducing environmental impact, offering a practical solution for waste valorization in construction applications.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1515/rams-2025-0207first seen 2026-06-29 06:43:17
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