早期C4AF与二氧化烟的水化及其在加酸盐组成中的作用
Martin Boháč1, Anežka Zezulová1, Michaela Krejčí Kotlánová1
1Research Institute for Building Materials, Brno, Czech Republic.
Journal of microscopy
|February 28, 2024
概括
将二氧化烟添加到C4AF (四氨化) 中,会影响其水分,促进 katoite 的形成. 这项研究调查了二氧化烟雾.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
背景情况:
- 酸化 (C4AF) 是一个关键的水泥化工阶段,反应性一般较低.
- 补充性水泥材料 (SCM),如二氧化烟雾,可以改变水泥的水化性能.
- 了解C4AF与SCM的反应性对于开发先进的水泥材料至关重要.
研究的目的:
- 为了研究纯C4AF在与二氧化烟雾改性时的早期水化行为.
- 为了确定二氧化烟雾对水石阶段 (katoite) 的形成的影响.
- 为了分析C4AF用二氧化烟液加水过程中的微观结构和相位组成变化.
主要方法:
- 在实验室炉中合成纯C4AF.
- 异热热量计用于监测在20°C和40°C的7天水合期间的热流.
- 扫描电子显微镜与能量分散式X射线光谱 (SEM-EDS) 用于微观结构分析.
- 不同热分析-热重力测量分析 (DTA-TGA) 和定量X射线衍射 (QXRD) 用于相位组成.
主要成果:
- 同热度测量显示C4AF迅速溶解,形成转移稳定的C-{A,F) -H,并转化为C3{A,F) -H6.
- 在SEM-EDS分析中,在早期水化过程中记录了微观结构变化.
- QXRD和DTA-TGA证实了卡托石的形成,X射线微分析表明其结构中存在可变的基替代.
结论:
- 添加到C4AF的烟会影响其水化动力学和相位演变.
- 加托石的形成是由烟促进的,由于的替代,其成分具有显著的变化.
- 该研究提供了关于C4AF和烟之间的相互作用的见解,这与水泥化学和材料科学有关.
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