化学激活剂和扩张性剂的比较分析,用于使用工业固体废物基地质聚合物稳定岩沙
Zilu Xie1, Zengzhen Qian1, Xianlong Lu2
1School of Engineering and Technology, China University of Geosciences, No. 29 Xueyuan Road, Haidian District, Beijing 100083, China.
Gels (Basel, Switzerland)
|September 26, 2025
概括
土矿显著提高了岩沙地质聚合物 (ASIG) 的强度,比化学激活剂更有效. 这种膨胀剂改善了孔隙结构,使矩阵变密,提供了优质的环保建筑材料.
科学领域:
- 地质技术工程 地质技术工程
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
背景情况:
- 岩沙是干旱地区的关键建筑材料.
- 基于工业固体废物的地质聚合物 (ISWG) 为砂稳定提供了替代水泥的可持续替代品.
- 由ISWG (ASIG) 稳定的岩砂需要添加剂来增强其机械性能.
研究的目的:
- 为了比较研究化学激活剂和膨胀剂对ASIG压力强度的影响.
- 阐明ASIG上的添加剂的增强机制.
- 为了确定最有效的添加剂来改善ASIG属性.
主要方法:
- ASIG是使用岩沙和ISWG准备的.
- 三种化学活性剂 (NaOH,Ca(OH) 2,CaCl2) 和两种膨胀剂 (脱硫石膏,土石) 被纳入.
- 鉴定包括X射线衍射,热重力测量分析,扫描电子显微镜,入孔测量和pH测试.
主要成果:
- 与化学激活剂相比,膨胀剂对ASIG产生了更强的强化作用.
- 化学激活剂增强了地质聚合物矩阵,但增加了粒子间孔隙.
- 土石通过压缩证明了有效的孔填充和矩阵密集,优于脱硫石膏和化学激活剂.
结论:
- 对于ASIG来说,土岩与岩沙的微观结构具有优越的兼容性.
- 班托尼特在增强ASIG强度方面比传统的激活剂或脱硫石膏更有效.
- 这些发现支持石作为沙漠地区环保建筑材料的有希望的添加剂.
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