优化使用低等级的高酸粘土在石灰石化粘土水泥生产中的优化 (LC3)
Paola Vargas1, María Victoria Borrachero1, Jordi Payá1
1Instituto Universitario de Investigación de Ciencia y Tecnología del Hormigón (ICITECH), Universitat Politècnica de València, 46022 Valencia, Spain.
Materials (Basel, Switzerland)
|January 25, 2025
概括
石灰石化粘土水泥 (LC3) 显示了可持续建筑的前景. 在低高酸盐粘土中添加甲醇可显著提高LC3砂的质量.
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.
- 可持续建筑 可持续建筑
背景情况:
- 石灰石化粘土水泥 (LC3) 是波特兰水泥的一个有希望的低碳替代品.
- 最佳的LC3性能需要化粘土中最低的高酸盐含量.
- 当地粘土可能没有足够的高,需要提高性能的策略.
研究的目的:
- 评估使用来自西班牙瓦伦西亚的低高酸粘土用于LC3生产.
- 通过结合甲来研究用这种粘土制成的LC3的性能提升.
- 分析metakaolin添加对LC3.3.的机械性能和水合的影响.
主要方法:
- 原材料的物理化学表征.
- 对水泥糊的微结构分析 (异热热度计,热重度计,XRD).
- 在各种固化年龄下对砂压力强度的机械测试.
主要成果:
- 含有较高化高酸盐的LC3砂 (通过metakaolin添加获得) 显示压力强度增加.
- 甲可林添加剂加速了LC3的水化动力学,促进了AFm相位的形成 (单碳氨酸,半碳氨酸).
- 观察到显著的强度改善:6%的甲考林增强了90天的强度,10%在28天超过控制,15%在7天超过控制.
结论:
- 甲考林有效地提高了用低考林酸盐粘土制成的LC3的机械性能.
- 添加甲考林通过核化效应和AFm相形成改善了水合动力学.
- 将较少反应的局部粘土与高度反应的金属结合起来,是可持续水泥生产的可行策略.
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