LCA-guided design and optimisation of sulfoaluminate cement with GGBFS and fly ash
LCAに基づくサルフォアルミネートセメントの設計と最適化：高炉スラグとフライアッシュを用いて (AI 翻訳)
Liulei Lu, Xiaoli Li#, Qi Luo, Junfeng Wang, Qionglin Fu, Yang Yi
🤖 gxceed AI 要約
日本語
本研究は、サルフォアルミネートセメント（SAC）に高炉スラグとフライアッシュを組み合わせたハイブリッドシステムをLCAを用いて最適化し、従来の普通ポルトランドセメントと比較して70%のCO2削減を達成した。4%の脱硫石膏の添加により強度が向上し、細孔構造が改善された。この成果は建設材料の脱炭素化と産業廃棄物の有効活用に貢献する。
English
This study uses LCA to optimize a hybrid cement system combining sulfoaluminate cement with GGBFS and fly ash, achieving a 70% CO2 reduction compared to OPC. Adding 4% desulfurization gypsum improved compressive strength and pore structure. This contributes to decarbonization of construction materials and industrial waste valorization.
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
日本では建設分野の脱炭素化が急務であり、セメント産業はCO2排出量の約7%を占める。本研究成果は、日本のセメントメーカーにとって、既存の産業副産物を活用した低炭素セメントの実用化に直結する知見を提供する。
In the global GX context
Globally, cement production is a major source of CO2. This paper demonstrates a viable pathway for low-carbon cement using industrial by-products, aligning with global decarbonization goals and circular economy principles.
👥 読者別の含意
🔬研究者:Provides a successful example of LCA-guided optimization for blended cements, useful for further research in sustainable construction materials.
🏢実務担当者:Offers a formulation with 70% CO2 reduction that can be adopted by cement manufacturers using readily available materials.
🏛政策担当者:Emphasizes the potential for policy support to incentivize low-carbon cement and industrial waste utilization.
📄 Abstract（原文）
The urgent need to mitigate the carbon dioxide footprint of cement production has driven the development of innovative blended cements. The focus of this study was a hybrid system integrating sulfoaluminate cement (SAC), ground granulated blast-furnace slag (GGBFS) and fly ash (FA), with desulfurisation gypsum (DG) as a functional addition to balance performance and sustainability. Life cycle assessment revealed that the optimised blended cement formulation achieved a 70% reduction in carbon dioxide emissions compared with conventional ordinary Portland cement, primarily attributed to 50% SAC replacement and reduced clinker dependency. The experimental results demonstrated that 4% DG incorporation enhanced the 28-day compressive strength and reduced the chloride diffusion coefficient, correlated with a refined pore structure and suppressed harmful phase transitions. Microstructural analysis confirmed that the DG modulated the hydration kinetics, which promoted continuous ettringite formation and reduced the pores of size >50 nm by 17.7% at 28 days, thereby enhancing matrix densification. The synergy within the GGBFS–FA binary system under DG modulation established a viable pathway for sustainable cement design, addressing the goals of both reducing carbon dioxide emissions of construction materials and industrial waste valorisation.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1680/jadcr.25.00072first seen 2026-06-29 06:44:53
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