緑色低温活性化と固化 ダイアベース・テイルリングからの高強度ジオポリマー・バインダー
Yanan Hu1, Yong Yao1,2, Lingling Zhang1
1School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, China.
Materials (Basel, Switzerland)
|August 28, 2025
まとめ
この研究は,低温の熱活性化を使用してジオポリマー結合剤のダイアベース尾部 (DT) を強化します. このプロセスは反応性や耐久性を向上させ 持続可能な建築材料の開発を可能にします
科学分野:
- 材料科学
- 地化学
- 土木工学
背景:
- ダイアベース・テイルリング (DT) は,低反応性と劣った性により,ジオポリマー結合剤に限られた使用量の工業副産物である.
- 持続可能な資源管理と環境への影響を減らすために,DTのような鉱山廃棄物のアプリケーションの開発は不可欠です.
研究 の 目的:
- ジオポリマー結合剤の適用のためのダイアベース・テールリングの反応性と性を高めるため.
- シリケート豊富な鉱山廃棄物を利用するためのグリーンでエネルギー効率の高い方法を開発する.
- 処理されたダイアベース・テールから派生したジオポリマーの微細構造の進化と機械的性質を調査する.
主な方法:
- 低温 (100, 200, 300 °C) の段階的な熱活性化を含む二重調節戦略.
- ジオポリマー結合物質の形成のための標準的な固化条件 (20 ± 2 °C, 95% RH).
- X線微分法 (XRD),フーリエ変換赤外線光譜法 (FTIR),スキャン電子顕微鏡法 (SEM) を用いた特徴化.
- 圧縮力と屈折力の測定を含む機械試験
主要な成果:
- 熱活性化により,ダイアベース残留物中のアンフィボール,ピロキセン,オリビンは著しく分解され,反応性SiとAlの放出が増加した.
- 凝固したN-A-S-H/C-A-S-Hゲル構造が形成され,地質ポリマー化が強化されたことを示した.
- 最適化されたジオポリマー製剤は7日間の圧縮強度42. 3±1. 8MPaと屈折強度12. 76±1. 6MPaを達成した.
- 屈折と圧縮の強さの比率は0.308に達し,頑丈性が向上したことを示しています.
結論:
- 開発された二重調節戦略は,ジオポリマー結合剤のダイアベース残留物の性能を効果的に向上させる.
- このアプローチは,シリケート豊富な鉱山廃棄物の高価値の再利用のための持続可能でエネルギー効率の高い経路を提供します.
- その結果生じるジオポリマーの結合物質は優れた機械的特性を持ち,先進的な持続可能な建築材料の開発に寄与しています.
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