Low-Carbon UHPC Incorporating GGBS–Calcium Carbide Slag and Recycled Plastic Fibers: Mechanical Properties, Hydration, and Sustainability
GGBS-カルシウムカーバイドスラグとリサイクルプラスチック繊維を用いた低炭素UHPC：力学特性、水和、持続可能性 (AI 翻訳)
Weiliang Wang, Haoran Guo, Tianjiao Han, Qi Wang, Yanjie Wang
🤖 gxceed AI 要約
日本語
本研究は、セメントと鋼繊維の一部を産業廃棄物（GGBSとカルシウムカーバイドスラグ）とリサイクルプラスチック繊維で置換した低炭素UHPCを開発。適切な配合で強度が向上し、CO2排出量とコストを削減できることを示した。特に30%ISW-30%RPF配合がバランスに優れ、50%ISW-50%RPFは炭素・コスト重視用途に適する。
English
This study develops a low-carbon UHPC by partially replacing cement and steel fibers with industrial solid waste (GGBS and calcium carbide slag) and recycled plastic fibers. Appropriate mix proportions improve mechanical strength while reducing carbon emissions and cost. The 30% ISW-30% RPF mix offers balanced performance, while 50% ISW-50% RPF suits carbon- and cost-sensitive applications.
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CO2排出削減が急務であり、低炭素材料の開発は脱炭素社会の実現に貢献する。本研究の成果は、日本の建設会社や材料メーカーが環境負荷低減とコスト削減を両立する材料選定に活用できる。
In the global GX context
Globally, the construction sector faces pressure to reduce embodied carbon in concrete. This study offers a practical approach to lower carbon emissions in UHPC production, aligning with global sustainability goals and green building standards.
👥 読者別の含意
🔬研究者:Provides empirical data on mechanical and hydration properties of low-carbon UHPC with industrial waste and recycled fibers.
🏢実務担当者:Offers a viable mix design for reducing carbon footprint and material costs in high-performance concrete applications.
📄 Abstract（原文）
Ultra-high-performance concrete (UHPC) typically contains high cement and steel-fiber contents, leading to high cost and carbon emissions. This study developed a low-carbon UHPC by partially replacing cement with industrial solid waste (ISW) composed of ground granulated blast-furnace slag and calcium carbide slag, and by partially replacing steel fibers with recycled plastic fibers (RPF). The effects of ISW and RPF on flowability, mechanical properties, hydration behavior, microstructure, carbon emissions, and raw-material cost were investigated. ISW had a limited influence on flowability, whereas RPF markedly reduced flowability. Appropriate ISW and RPF contents increased flexural and compressive strengths by up to 41.02% and 14.93%, respectively. The 30% ISW-50% RPF mixture provided the highest flexural strength, while 30% ISW-30% RPF achieved the highest compressive strength with acceptable flowability. Hydration heat, XRD, SEM, and FTIR analyses showed that moderate ISW promoted early hydration and C-S-H/C-A-S-H gel formation, whereas excessive ISW caused dilution and reduced matrix compactness. Therefore, 30% ISW-30% RPF is recommended as the balanced formulation, whereas 50% ISW-50% RPF is more suitable for carbon- and cost-sensitive applications and maintains approximately 150 MPa compressive strength.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/ma19153277first seen 2026-08-05 04:53:57
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