低炭素代替としての複合セメントコンクリートのマルチスケール性能評価：OPC、PPC、PSCシステムとの比較評価
Multi-scale performance evaluation of composite cement concrete as a low-carbon alternative: A comparative assessment with OPC, PPC, and PSC systems (原題)
Jhansi Kapavarapu, G Papa Rao, B Krishna Rao
🤖 gxceed AI 要約
日本語
本研究は、複合セメントコンクリートの性能をOPC、PPC、PSCコンクリートと比較評価した。複合セメントは圧縮強度で10-15%向上し、耐久性指標も優れていた。ライフサイクル評価では、OPCコンクリートと比較して体積エネルギーと地球温暖化係数をそれぞれ10-12%と15-17%削減した。低炭素セメントの実用性を示す重要な知見を提供する。
English
This study evaluates composite cement concrete against OPC, PPC, and PSC systems. Composite cement achieved 10-15% higher compressive strength and superior durability indicators. Life cycle assessment showed 10-12% reduction in embodied energy and 15-17% reduction in global warming potential compared to OPC concrete. Provides key insights into low-carbon cement viability.
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、カーボンニュートラル達成に向けてセメント産業の脱炭素化が急務であり、本研究成果は低炭素セメントの採用判断に有用なデータを提供する。また、SSBJ開示やサプライチェーン排出量算定において、建設資材の排出原単位改善に寄与する可能性がある。
In the global GX context
Globally, the cement industry is under pressure to reduce carbon emissions. This study provides empirical evidence on composite cement's performance and environmental benefits, supporting its adoption in sustainable construction. Relevant for global efforts to decarbonize building materials and align with ISSB/CSRD disclosure requirements.
👥 読者別の含意
🔬研究者:Provides comparative performance and LCA data for composite cement, useful for further research on low-clinker alternatives.
🏢実務担当者:Offers evidence for selecting composite cement in concrete mixes to reduce carbon footprint without compromising performance.
🏛政策担当者:Informs policy on promoting low-carbon cement technologies and setting standards for sustainable construction materials.
📄 Abstract（原文）
Composite cement has emerged as a viable low-clinker alternative to conventional cement systems; however, its holistic performance in concrete, particularly in terms of durability and sustainability, remains insufficiently documented. This study investigates the fresh, mechanical, transport, durability, and environmental performance of composite cement concrete in comparison with OPC, PPC, and PSC concretes. Concrete mixes were prepared with composite cement at water–cement ratios of 0.40, 0.45, and 0.50, while reference mixes were designed with comparable workability. Fresh properties showed controlled rheological behavior, with slump ranging from 60 to 100 mm and consistent correlations observed among slump, compaction factor, Kelly ball, and yield stress. Composite cement concretes achieved superior mechanical performance, with compressive strength reaching 44.6 MPa at 28 days, representing an improvement of about 10–15% over conventional cement concretes. Splitting tensile, flexural strength, and elastic modulus increased by 12–20%, confirming enhanced crack resistance and stiffness. Transport and durability indicators demonstrated significant pore refinement, with water permeability reducing to about 1.4 × 10⁻¹⁰ m/s, RCPT charge passed falling below 300 coulombs, and surface resistivity exceeding 140 kΩ-cm at 90 days, indicating very low corrosion risk. Under aggressive environments, composite cement concretes exhibited lower mass loss and retained more than 89% and 93% of their original compressive strength after acid and sulphate exposure, respectively. Life cycle assessment revealed reductions of 10–12% in embodied energy and 15–17% in global warming potential compared to OPC concrete.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.mtcomm.2026.116080first seen 2026-09-08 04:40:46
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