3D-Printed Low-Carbon UHPC Using Limestone Calcine Clay Cement (LC3)
石灰石煆焼粘土セメント（LC3）を用いた3Dプリント低炭素UHPC (AI 翻訳)
Shunyang Yao, Mehdi Chougan, Doo-Yeol Yoo, Behzad Nematollahi
🤖 gxceed AI 要約
日本語
本研究は、3Dコンクリートプリンティング（3DCP）用に石灰石煆焼粘土セメント（LC3）を用いた低炭素超高強度コンクリート（UHPC）を開発した。従来のポルトランドセメントを用いた3DP-UHPCと比較して、力学特性を維持しつつ、CO2排出量、エネルギー、コストをそれぞれ約25%、10%、9%削減できることを示した。環境・コスト評価により、持続可能な代替材料としての有効性を実証した。
English
This study develops a low-carbon ultra-high performance concrete (UHPC) using limestone calcined clay cement (LC3) for 3D concrete printing (3DCP). Compared to conventional Portland cement-based 3DP-UHPC, it maintains mechanical properties while reducing CO2 emissions, embodied energy, and cost by about 25%, 10%, and 9%, respectively. Environmental and cost assessments confirm its viability as a sustainable alternative.
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建材の低炭素化が急務であり、本研究成果は3Dプリンティング技術と組み合わせることで、建設現場の省人化とCO2削減を同時に実現する可能性を示す。また、LC3は日本国内でも原料の入手が可能であり、今後の実用化が期待される。
In the global GX context
Globally, the construction sector faces pressure to reduce embodied carbon, and this study offers a practical solution by combining low-carbon cement (LC3) with 3D printing, a technology gaining traction for its efficiency and design flexibility. The quantified reductions in CO2, energy, and cost provide a strong business case for adoption, aligning with global sustainability goals and green building standards.
👥 読者別の含意
🔬研究者:Provides a comprehensive evaluation of a novel low-carbon UHPC for 3D printing, including fresh and hardened properties, and environmental/cost assessments.
🏢実務担当者:Offers a viable alternative material for 3DCP that reduces carbon footprint and cost, which can be adopted in construction projects to meet sustainability targets.
🏛政策担当者:Demonstrates the potential of LC3-based materials in reducing construction emissions, supporting policies that incentivize low-carbon building materials.
📄 Abstract（原文）
Previous studies by the authors and others have shown that ultra-high performance concrete (UHPC) is an ideal printing material for 3D concrete printing (3DCP). However, its high carbon emissions may limit its application in 3DCP. As a solution, this study reports the development of a 3D-printed low-carbon UHPC using limestone calcined clay cement (LC3), denoted as 3DP-LC3-UHPC. The fresh and hardened properties of 3DP-LC3-UHPC were evaluated and compared with those of conventional 3D-printed UHPC using Portland cement (3DP-PC-UHPC). Conventionally mold-cast mixtures were also prepared for comparison. Fresh properties included flowability, setting time, rheological properties, extrudability, and buildability. Hardened properties included compressive strength and flexural performance in different directions. The effect of two curing regimes (heat- and ambient temperature-curing) on hardened properties was also investigated. The results showed that 3DP-LC3-UHPC possessed higher dynamic yield stress, plastic viscosity, and thixotropy recovery, and exhibited satisfactory extrudability and buildability. The 3DP-LC3-UHPC achieved compressive strengths of 130.4-169.4 MPa and flexural strengths of 26.9-30.6 MPa, depending on the testing direction. Environmental and cost assessments confirmed that 3DP-LC3-UHPC reduces carbon dioxide emissions, embodied energy, and cost by about 25%, 10%, and 9%, respectively, compared to 3DP-PC-UHPC. Overall, the findings demonstrate that 3DP-LC3-UHPC is a sustainable and cost-effective alternative to conventional 3DP-PC-UHPC.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.20944/preprints202604.1951.v1first seen 2026-05-17 05:45:36 · last seen 2026-05-28 05:00:30
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