Recycled lithium slag and C-A-S-H nano-seeds as composite activators in low-carbon blended cements: sulfate regulation and nucleation effects
リサイクルリチウムスラグとC-A-S-Hナノシードを複合活性化剤として用いた低炭素ブレンドセメント：硫酸塩調整と核生成効果 (AI 翻訳)
Fubing Zou, Rui Li, Hongyu Wang, Xingang Wang, Weichen Tian, Wenxiang Cao, Yong Yu, Chenyang Wang
🤖 gxceed AI 要約
日本語
この研究では、リチウムスラグとC-A-S-Hナノシードを複合活性化剤として用いた低炭素セメントの水和反応を調べた。結果、20%リチウムスラグと1.0%ナノシードの添加により、初期強度が向上し、地球温暖化係数を43.52%削減した。コストも15.4%低減したが、耐久性の評価は今後の課題である。
English
This study investigated the use of lithium slag (LS) and C-A-S-H nano-seeds as composite activators in low-carbon blended cements. The optimal formulation (20% LS + 1.0% CANS) increased early compressive strength by 52.3% and flexural strength by 100% at 1 day. It also reduced global warming potential by 43.52% and cost intensity by 15.4% compared to Portland cement, offering a promising route for low-carbon cement production.
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
日本のセメント産業はCO2排出削減が急務であり、本研究成果はリチウムスラグを活用した低炭素セメントの可能性を示す。ただし、リチウムスラグの供給や耐久性評価は日本での実用化には別途検討が必要。
In the global GX context
This paper provides a practical strategy for reducing the carbon footprint of cement, a major global emitter. The use of industrial waste (lithium slag) aligns with circular economy principles and could be replicated in other regions with similar waste streams.
👥 読者別の含意
🔬研究者:Demonstrates a synergistic activation mechanism for low-carbon cements using dual additives, providing a basis for further material optimization.
🏢実務担当者:Offers a potential formulation for cement producers to lower carbon intensity and costs, but durability testing is required before commercial use.
🏛政策担当者:Supports the development of low-carbon building material standards and incentivizing industrial waste utilization in cement.
📄 Abstract（原文）
This study investigated the alkali-sulfate activation by ultra-high sulfate lepidolite lithium slag (LS) and its synergistic enhancement with C-A-S-H nano-seeds (CANS) on the regulation of early-age hydration products in the granulated blast furnace slag-cement system. The results demonstrate that incorporating 20% LS and 1.0% CANS (the L2S3C system) significantly accelerated early-age hydration. At 1 day, the compressive and flexural strength increased by 52.3% and 100%, respectively. Specifically, the L2S3C system exhibited the highest quantities of C-(A)-S-H gel and AFt, a moderate AFt to C-(A)-S-H gel mass ratio. Furthermore, using 20% LS reduced the global warming potential by 43.52% and cost intensity by 15.4% compared to Portland cement. This work offers a straightforward method for utilizing LS and a new strategy for developing low-carbon, high-performance cement-based materials. However, the applicability of the proposed sustainability and economic analysis is limited because the durability of LS should be comprehensively considered.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1080/21650373.2026.2690474first seen 2026-06-25 04:48:33
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