Optimized Production of Sol–Gel Nanosilica and Synergistic Effect on the Performance and Sustainability of Cement-Based Materials
ソルゲルナノシリカの最適化製造とセメント系材料の性能および持続可能性への相乗効果 (AI 翻訳)
J. Puerto, Sandra Uribe, Gilmer Hernández
🤖 gxceed AI 要約
日本語
pH制御ソルゲル法で合成したナノシリカがセメントペーストの性能に与える影響を評価。pH9で合成したナノシリカは高い比表面積とコロイド安定性を示し、0.4wt%の低添加量で3日圧縮強度を61%向上、水和反応を促進した。XRD分析でポルトランダイト含有量22%減少を確認。早期強度向上によりクリンカ置換戦略が可能となり、炭素フットプリント削減に貢献する可能性がある。
English
This study evaluates the effect of pH-controlled sol-gel nanosilica on cement paste performance. Nanosilica synthesized at pH 9 exhibited high specific surface area (655 m²/g) and colloidal stability, increasing 3-day compressive strength by 61% at a low dosage (0.4 wt%). XRD analysis confirmed a 22% reduction in portlandite content. The early-age strength enhancement enables clinker substitution strategies, potentially reducing the carbon footprint of cementitious systems.
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
日本の建設業界では、コンクリートの脱炭素化が急務となっている。本論文は、ナノシリカの添加により初期強度を高め、クリンカ置換を可能にする手法を示しており、日本のセメント産業の低炭素化に貢献する可能性がある。
In the global GX context
Cement production is a major global CO2 emitter. This study presents a nanomaterial approach to enhance early-age strength, enabling clinker reduction. This aligns with global trends in low-carbon construction and could support companies in meeting ISSB and transition finance requirements for verified emission reductions.
👥 読者別の含意
🔬研究者:Materials scientists working on sustainable concrete can benefit from the detailed nanosilica synthesis and hydration kinetics analysis.
🏢実務担当者:Cement and concrete manufacturers can explore using this nanosilica to produce low-clinker, high-performance cements.
🏛政策担当者:Building code authorities and carbon regulators can consider this technology for low-carbon construction standards and carbon footprint reduction schemes.
📄 Abstract（原文）
The development of sustainable construction materials requires innovative strategies to optimize cement hydration and reduce clinker consumption. This study evaluates the influence of ammonia-controlled sol–gel synthesis on the physicochemical properties of nanosilica and its subsequent impact on the performance of sustainable cement pastes. Nanosilica was synthesized at pH 9 and 11, revealing that the pH 9 environment yields a superior specific surface area (655 m2/g) and enhanced colloidal stability (ζ = −42.5 mV). These properties triggered a 61% increase in compressive strength at 3 days with a low dosage (0.4 wt%), significantly accelerating the hydration kinetics. XRD analysis confirmed a 22% reduction in the portlandite content, validating a robust pozzolanic-nucleation mechanism. Furthermore, rheological modeling showed an increased yield stress (up to 31.2 Pa), consistent with a dense, interconnected percolation network. The observed 61% early-age strength increase conceptually enables clinker substitution strategies; the associated environmental benefits—including potential reductions in the carbon footprint of cementitious systems—warrant future quantification through life-cycle assessment (LCA), which is beyond the scope of the present work. These results demonstrate that tailored sol–gel synthesis provides a high-efficiency pathway for the development of eco-efficient, high-performance cementitious materials.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.3390/su18136540first seen 2026-07-04 05:40:01
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