Effect of multi-source solid waste synergistic activation on strength evolution and micro-mechanism of dredged sludge stabilized with low-carbon curing agent
多源固形廃棄物の相乗活性化が低炭素固化材で安定化した浚渫土の強度発現と微視的メカニズムに及ぼす影響 (AI 翻訳)
Pengsheng Fang, Shunmei Gong, Xiangyi Yang, Hu Ru, DaPeng Ge, Yuanyuan Chen, Ling Wang
🤖 gxceed AI 要約
日本語
本研究は、セメント・スラグ・フライアッシュを水ガラスで複合活性化し、浚渫土壌の固化強度を向上させる配合を最適化した。実験により、セメント:スラグ:フライアッシュ=15:10:5、水ガラス7%が最適で、水和反応とポゾラン反応が促進され、内部構造が緻密化することを示した。低炭素固化材の利用でセメント使用量を削減し、廃棄物の有効活用とCO2排出削減に寄与する。
English
This study optimizes the mix design for stabilizing dredged sludge using a low-carbon curing agent composed of cement, slag, fly ash, and water glass as an activator. The optimal ratio (15:10:5 with 7% water glass) enhances strength through hydration and pozzolanic reactions, densifying the microstructure. This approach reduces cement usage, contributing to waste valorization and lower CO2 emissions in construction.
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
日本では建設発生土の有効利用や低炭素型固化材の需要が高まっており、本研究成果は浚渫土のリサイクルとCO2削減に寄与する可能性がある。ただし、日本の土質や規格への適合性は別途検証が必要。
In the global GX context
Globally, the construction sector seeks low-carbon alternatives to cement. This study demonstrates a viable method for sludge solidification using industrial by-products, aligning with circular economy principles and carbon reduction goals. It offers empirical data for developing sustainable construction materials.
👥 読者別の含意
🔬研究者:Provides experimental data on synergistic activation of multi-source solid wastes for sludge solidification, useful for optimizing low-carbon binder formulations.
🏢実務担当者:Offers a potential mix design for low-carbon curing agents that can reduce cement usage in sludge treatment projects, aiding sustainability reporting.
🏛政策担当者:Supports policies promoting waste-to-resource initiatives and low-carbon construction materials, though further LCA is needed.
📄 Abstract（原文）
To enhance the strength of solidified waste sludge, this study builds upon traditional cement-based sludge solidification methods and the waste-to-waste treatment principle. Cement, slag and fly ash were selected as solidifies, with water glass serving as an activator. The objective is to determine the optimal raw material proportions for solidified sludge under composite activation. The strength and microstructure of the cured samples were investigated by unconfined compressive strength (UCS), X-ray diffraction (XRD) and thermogravimetric (TG) experiments. Taking the single-doped cement sample as the control group, the internal relationship between the amount of raw materials and the UCS of the sludge was explored, which provided a theoretical basis for optimizing the mix design of the sludge. The results demonstrate that when the ratio of cement: slag: fly ash is 15: 10: 5, the optimal dosage of water glass is 7%. Water glass provides a good alkaline environment for the composite system, which effectively promotes the hydration reaction and pozzolanic reaction of cement, slag and fly ash. The generated hydration products make the internal structure of solidified sludge more compact, thus significantly improving the strength of solidified sludge.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1371/journal.pone.0353068first seen 2026-08-08 04:58:29
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