Low-carbon precast concrete: optimising mixture design and renewable-energy steam curing
低炭素プレキャストコンクリート：配合設計と再生可能エネルギー蒸気養生の最適化 (AI 翻訳)
Xuhui Wang, Tongsheng Zhang, G.N. Xu, Peijia Zhang, Rongfu Zhang, Siqing Zeng, Jiangxiong Wei, Qijun Yu
🤖 gxceed AI 要約
日本語
本研究は、プレキャストコンクリートの配合設計と再生可能エネルギー蒸気養生を最適化し、CO2排出量を71.7～76.4 kg/m³削減できることを実証。15%高炉スラグ配合と制御された養生条件により、強度と耐久性が向上し、コストも削減。工場規模での実証も行われ、実用性が確認された。
English
This study optimizes mixture design and renewable-energy steam curing for precast concrete, achieving CO2 emission reductions of 71.7-76.4 kg/m³. A mix with 15% GGBS and controlled curing improves strength and durability while cutting costs. Plant-scale validation confirms practical feasibility.
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、コンクリート製造時のCO2排出削減が急務であり、本研究成果は低炭素コンクリートの実用化に貢献。再生可能エネルギー利用と配合最適化の組み合わせは、日本のゼロカーボン建築政策に適合。
In the global GX context
This research offers a scalable approach for reducing embodied carbon in concrete, aligning with global efforts to decarbonize construction materials. The demonstrated cost savings and emission reductions support the business case for low-carbon concrete in international markets.
👥 読者別の含意
🔬研究者:Provides a data-driven method for optimizing low-carbon concrete mixtures and curing regimes, with quantified performance and emission trade-offs.
🏢実務担当者:Offers a practical recipe for producing low-carbon precast concrete with verified cost and emission savings, applicable to construction firms.
🏛政策担当者:Highlights the potential of renewable-energy curing and supplementary cementitious materials to meet construction sector decarbonization targets.
📄 Abstract（原文）
Precast concrete production commonly relies on clinker-intensive mixtures and steam curing, resulting in high carbon dioxide emissions and potential deterioration of long-term performance under excessive thermal exposure. This study presents an optimisation strategy combining mixture design and renewable steam curing for precast concrete production. Concrete mixtures were first screened under baseline steam curing, and the shortlisted mixtures were then evaluated under systematically varied curing parameters. The results show that a mixture with 15% ground granulated blast-furnace slag, combined with a controlled curing regime of 12 h precuring, 15°C/h heating/cooling, 60°C isothermal temperature and 12 h holding, provided the best overall balance between early strength, long-term mechanical performance and durability. Compared with the reference concrete, the optimised system increased 28-day compressive strength by 16.3% and reduced chloride migration by 41.2%. These improvements in precast concrete performance can be attributed to pore refinement and interfacial transition zone densification. Plant-scale validation further demonstrated the practical feasibility of the proposed approach and its potential to reduce equivalent carbon dioxide emissions by 71.7–76.4 kg/m³, coal and natural resource consumption by 121.9 kg/m³ and costs by 2.1–7.8 US$/m³ in precast concrete production.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1680/jcoma.26.00039first seen 2026-08-08 04:56:52
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