纳米尺度孔隙精炼和水合控制在无化改性超硫化水泥中:化诱导晶相过渡的作用
Zeyuan Hu1, Cheng Zhang1, Yi Wan2
1School of Safety Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Nanomaterials (Basel, Switzerland)
|September 26, 2025
概括
低碳超硫酸盐水泥 (SSC) 的性能通过使用低可溶性无水酸盐 (II-U CaSO4) 来提高. 这种无水化物增强了渣渣的水分,细化了孔隙结构,并通过优化水分处理过程显著提高了压力强度.
科学领域:
- 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.
- 纳米技术纳米技术
背景情况:
- 低碳水泥对于可持续建筑至关重要.
- 超硫化水泥 (SSC),利用高炉渣和硫酸,提供了一个环保的替代方案.
- 优化纳米结构对于提高水泥性能至关重要.
研究的目的:
- 研究不同类型的晶体无水化物对SSC的水分和强度的影响.
- 评估无水化物溶解度对渣渣水化和微观结构的影响.
- 为了阐明无水化物激活的SSC的水化机制.
主要方法:
- 对两种无水化物类型的比较分析:III CaSO4 (高溶解度) 和II-U CaSO4 (低溶解度).
- 评估机械性能,孔隙结构,相位组成,反应程度和水化热量.
- 化产品的微观结构分析,包括化和酸水合物 (C-S-H) 凝.
主要成果:
- 与III CaSO4.4相比,II-U无水化物显著增强了渣渣的水化和SSC的压力强度.
- II-U无水化物减少了石膏的消耗,延迟了矿的形成,并促进了凝产品的形成.
- 优化水合导致孔径减少,乙酸盐与C-S-H凝比率降低,孔隙性降低.
结论:
- 无水酸盐的结晶相极大地影响SSC的宏观性质和水化微观结构.
- II-U无水酸盐的低溶解度促进了更有利的水合途径,提高了SSC的性能.
- 无水的晶相工程为设计先进的低碳水泥提供了一个基于纳米材料的策略.
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