Development Of Low-Carbon Mortar Using Recycled Concrete Powder And Fly Ash For Sustainable And Circular Construction
リサイクルコンクリート粉末とフライアッシュを用いた低炭素モルタルの開発：持続可能で循環型の建設に向けて (AI 翻訳)
Lanh Thi Vinh Pham, Dung Tien Nguyen, Thang Thi Nguyen, Kien Ton Tong
🤖 gxceed AI 要約
日本語
本研究は、建設廃棄物（CDW）とフライアッシュ（FA）を利用して低炭素モルタルを開発した。セメントの一部を再生コンクリート粉末（CP）とFAで置換し、作業性、強度、コスト、地球温暖化係数（GWP）を評価。60% CPと10% FAの混合物が最適で、強度M7.5～M10を達成し、コスト43%削減、GWP約59%削減を実現した。
English
This study develops low-carbon mortar using recycled concrete powder (CP) and fly ash as partial cement replacements. The optimum mix with 60% CP and 10% fly ash achieves masonry-grade strength while reducing material cost by 43% and global warming potential by 59%. The approach demonstrates a practical pathway for sustainable construction and circular use of waste.
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
日本では建設廃材のリサイクルが進んでいるが、セメント代替材料の実用化はCO2削減に直結する。本研究は廃棄物の有効活用と低炭素化を両立する実証データを提供し、日本の建設業界における循環型社会の推進に寄与する。
In the global GX context
This paper provides empirical data on using construction and demolition waste and fly ash for low-carbon mortar, directly relevant to global efforts to decarbonize the construction sector. The results support circular economy principles and offer a scalable solution for reducing embodied carbon in buildings.
👥 読者別の含意
🔬研究者:Provides experimental data on mechanical and environmental performance of recycled concrete powder and fly ash in mortar, useful for material scientists and civil engineers working on low-carbon binders.
🏢実務担当者:Offers a ready-to-use mix design (60% CP + 10% FA) that can be adopted by concrete producers to reduce material costs and carbon footprint.
🏛政策担当者:Demonstrates the feasibility of using CDW in construction products, supporting policies that mandate recycled content in building materials.
📄 Abstract（原文）
The construction industry faces urgent challenges to cut carbon emissions and conserve natural resources, even as large volumes of construction and demolition waste (CDW) and fly ash (FA) remain underutilised. This study develops low-carbon masonry mortar by incorporating recycled concrete powder (CP) and FA as partial replacements for Portland cement. Mortar mixtures were prepared with CP replacement levels of 10–80%, followed by the addition of FA (10–30%) in high-CP systems. The effects on workability, compressive strength, water absorption, material cost, and global warming potential (GWP) were evaluated. Results show that increasing CP content reduces workability and strength, whereas FA improves fluidity and partially compensates for strength loss through pozzolanic reactions. The mixture containing 60% CP and 10% FA provides the best balance, achieving strength levels suitable for masonry applications (M7.5–M10) while reducing material cost by up to 43% and GWP by approximately 59%. Overall, the combined use of CP and FA enables cost savings of 7–57% and GWP reductions of 10–78%. These findings demonstrate a practical pathway for producing sustainable, low-carbon mortar and promoting circular use of construction waste.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.7771/3067-4883.2223first seen 2026-06-18 04:58:58
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