纳斯奎霍尼特对波特兰水泥早期水化的影响
Zihan Li1, Deping Chen2, Teng Teng2
1School of Resources and Safety Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Materials (Basel, Switzerland)
|December 11, 2025
概括
波特兰水泥中的内斯奎霍尼特添加剂促进了现场碳封存,并增强了早期的强度. 这种新的方法为高性能水泥材料提供了一个低碳途径.
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.
- 绿色化学 绿色化学
背景情况:
- 越来越多的压力减少碳排放在水泥行业需要创新的材料.
- 能够在现场捕获碳的水泥材料的开发是一个关键的研究领域.
- 波特兰水泥生产是工业二氧化碳排放的主要来源.
研究的目的:
- 为了研究nesquehonite (MgCO3·3H2O,NQ) 作为波特兰水泥中的功能添加剂.
- 评估NQ对水泥水化,水化产品和碳封存效率的影响.
- 探索NQ在开发低碳,高性能水泥方面的潜力.
主要方法:
- 用X射线衍射 (XRD) 分析相位组成和水化产品含量.
- 扫描电子显微镜 (SEM) 用于微观结构进化观测.
- 透阻力测试和水合测试,使用高水/固体比率.
- 使用纳米测量软件测量埃特灵石晶体大小 1.2.5.5.
主要成果:
- 纳入NQ显著改变了早期的波特兰水泥水化.
- 溶解的Mg2+和CO32-离子促进碳酸和含碳酸盐的沉.
- 最佳3%的NQ剂量增加了8.37%的糊的透阻力和1天的压力强度.
- 添加NQ影响了Ca(OH) 2结晶,在6小时之前阻碍了它,但在24小时后促进了它.
结论:
- 尼斯奎霍尼特作为一种功能性添加剂,将水泥水化转向低碳路径.
- NQ在调节水合和在水泥内封存碳方面表现出双重功能.
- 这项研究为高性能,低碳水泥开发提供了理论基础和技术途径.
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