Green synthesis of graphene by flash joule heating for reinforcing low-carbon cement-based composites.
フラッシュジュール加熱によるグラフェンのグリーン合成と低炭素セメント系複合材料への応用 (AI 翻訳)
Lei Wang, Weizhe Ge, Gang Huang, Liangming Zhao, Atabaev F. Baxtiyarovich, Małgorzata Wiśniewska, P. Oleszczuk
🤖 gxceed AI 要約
日本語
本研究では、フラッシュジュール加熱（FJH）法を用いてカーボンブラックから高品質フラッシュグラフェン（FG）を迅速・グリーン合成し、セメント系複合材料の補強に応用した。200V,0.5秒で合成したFGは乱層積層構造を示し、セメントマトリックスへの分散性が向上。0.20wt%添加で圧縮強度が161%向上し、ライフサイクル評価では炭素排出30%削減、性能コスト指数144%向上を達成。
English
This paper presents a green, solvent-free flash Joule heating method to synthesize high-quality graphene from carbon black for reinforcing cement composites. The synthesized graphene (0.20 wt%) increased compressive strength by 161% and improved pore structure. Life cycle analysis showed a 30% reduction in carbon emissions and a 144% improvement in performance-cost index, offering a sustainable approach for construction materials.
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
日本はセメント産業のCO2排出削減が急務。本手法は廃カーボンブラックを原料とし、グリーン合成で低コスト・低炭素なグラフェンを生成。セメント代替ではなく少量添加で性能向上と排出削減を両立し、日本の建設業のGXに貢献。SSBJやグリーンビルディング認証とも関連。
In the global GX context
Globally, the cement industry accounts for ~8% of CO2 emissions. This study demonstrates an innovative, scalable method to enhance cement with graphene, reducing emissions while improving performance. It aligns with global decarbonization goals and circular economy principles, offering a pathway for sustainable infrastructure.
👥 読者別の含意
🔬研究者:Provides a novel green synthesis method for graphene with clear performance and LCA data, relevant for material scientists and carbon accounting researchers.
🏢実務担当者:Construction companies and cement producers can consider this graphene additive to lower their product's carbon footprint and improve strength.
🏛政策担当者:Supports decarbonization of the construction sector; policymakers should note the potential for LCA-based incentives and support for green building materials.
📄 Abstract（原文）
Graphene has exceptional mechanical, electrical, and thermal properties, as well as ultra-high specific surface area, which has attracted interest as a potential modifier for reinforcing cement-based composites. However, traditional graphene production methods are often time-consuming, costly, and involve chemical solvents, limiting their widespread application in cementitious materials. This study employed a green and solvent-free flash Joule heating (FJH) technique to rapidly synthesize high-quality, low-defect flash graphene (FG) from inexpensive carbon black, which was subsequently used to produce high-performance cement-based composites. Experimental results indicated that both discharge voltage and discharge duration are critical factors influencing FG quality. X-ray diffraction (XRD) and Raman spectroscopy analyses revealed that FG synthesized at 200 V and 0.5 s exhibits a turbostratic stacking structure with an interlayer spacing (0.343 nm) larger than that of traditional AB-stacked graphene (0.335 nm). Such structural features enhanced its dispersion in the cementitious matrix. Incorporating 0.20 wt% FG significantly enhanced cement hydration and improved the pore structure, resulting in a 161% increase in compressive strength. Life cycle analysis revealed that FG-reinforced cement composites achieved 30% carbon emission reduction and 144% improvement in performance-cost index. This study combines eco-friendly, rapid graphene synthesis with low-carbon cementitious materials, offering a novel approach for efficient utilization of carbon-rich solid waste. It holds significant implications for reducing construction-related carbon emissions and advancing sustainable building materials.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1016/j.envres.2026.124516first seen 2026-06-29 06:56:23
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