Life cycle assessment shows admixtures support high-performance low-carbon LC3 concrete
ライフサイクルアセスメントにより、混和剤が高性能低炭素LC3コンクリートを支えることを示す (AI 翻訳)
Pippa Edwards, Sébastien Dhers, Rupert J. Myers
🤖 gxceed AI 要約
日本語
本研究は、混和剤（超可塑剤、促進剤、撥水剤）がLC3コンクリートの炭素排出量と性能に与える影響をLCAで評価。LC3-50とLC3-35はCEM II/A-LLと比較してCO2排出量を22〜38%削減し、混和剤が排出量の13%を占めることを示した。最適な混和剤とクリンカ含有量は要求性能に依存するが、最適な組み合わせは常にLC3を含む。
English
This study uses LCA to evaluate the impact of admixtures on the carbon footprint and performance of LC3 concrete. LC3-50 and LC3-35 reduce CO2 emissions by 22-38% compared to CEM II/A-LL, with admixtures contributing 13% of emissions. Optimal admixture and clinker content depends on required performance, but optimal combinations always include LC3.
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、コンクリートの脱炭素化が急務であり、LC3は低炭素材料として注目されている。本研究は、混和剤の最適化による性能向上とCO2削減の両立可能性を示し、日本の建設会社や材料メーカーにとって実践的な知見を提供する。
In the global GX context
Globally, the cement industry is under pressure to reduce emissions, and LC3 is a promising low-carbon alternative. This study provides evidence that admixtures can enhance performance while maintaining low carbon footprint, offering practical guidance for concrete producers seeking to meet sustainability targets.
👥 読者別の含意
🔬研究者:Provides LCA data on admixture impacts for LC3 concrete, useful for optimizing low-carbon concrete formulations.
🏢実務担当者:Concrete producers can use findings to select admixtures and clinker content for low-carbon high-performance concrete.
🏛政策担当者:Supports policies promoting low-carbon concrete by demonstrating viable alternatives to traditional cement.
📄 Abstract（原文）
Limestone calcined clay cements (LC 3 ) have high potential to reduce concrete’s carbon footprint. However, the impact of admixtures on carbon footprint of LC 3 concrete via performance enhancement is not well understood. This paper investigates the carbon footprint, compressive strength performance, and carbonation resistance of CEM II/A-LL, LC 3 -50, and LC 3 -35 concretes dosed with admixtures (polycarboxylate ether-based superplasticizer, C-S-H nanoparticle accelerator, silane-based water repellent). Generally, the results show that accelerator can increase the strength and carbonation exposure classes of LC 3 concretes. We show that LC 3 -50 and LC 3 -35 concretes reduced CO 2 -eq. emissions by 22 – 38 % compared to CEM II/A-LL, and that admixtures can contribute 13% of their cradle-to-gate CO 2 -eq. emissions. Optimal admixture addition and clinker content depends on the strength and carbonation exposure classes required, but of the concrete types studied, the optimum combinations always contained LC 3 and not CEM II/A-LL. Admixtures support the production of high-performance concretes with low carbon footprint.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.resconrec.2026.109095first seen 2026-08-03 04:51:11
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