使用CFBC灰的低碳结合剂的水化和机械性能
1Department of Civil and Environmental Engineering, Gachon University, Seongnam 13120, Gyeonggi-do, Republic of Korea.
Materials (Basel, Switzerland)
|June 27, 2025
概括
将脱硫石膏 (DG) 添加到循环流化床燃烧 (CFBC) 灰中,可以改善其自我固特性. 这种增强导致了更好的液压反应能力,并显著增加了基于灰的材料的压力强度.
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.
- 环境工程 环境工程
背景情况:
- 循环流化床燃烧 (CFBC) 灰是燃烧煤炭的副产品,由于含有自由石灰和无水化物,具有固有的自我凝固特性.
- 作为粘合剂的CFBC灰的性能往往是有限的,需要对物质增强的方法.
- 矿物添加剂,如石膏,正在探索改善工业副产品的水泥性行为.
研究的目的:
- 为了研究将脱硫石膏 (DG) 纳入CFBC灰的自我凝固行为的影响.
- 评估CFBC灰-DG混合物的水合特性和机械性能.
- 分析DG添加CFBC灰所引起的微观结构变化.
主要方法:
- 准备和测试含有CFBC灰和DG的糊和砂样本.
- 使用异热热度计,热重度计分析 (TGA),设置时间和X射线衍射 (XRD) 的水合分析.
- 通过在不同年龄段进行压力强度测试和使用侵入孔径学 (MIP) 的微结构检查来评估机械性能.
主要成果:
- 适当添加DG可以提高CFBC灰的液压反应性.
- 随着DG的整合,压力强度的显著改善被观察到.
- 微观结构分析揭示了毛孔大小分布的变化,与强度发展相关.
结论:
- 脱硫石膏有效地增强了CFBC灰的自我固特性.
- DG提高了CFBC灰基材料的水化动力学和长期机械性能.
- 这些发现表明,使用CFBC灰在建筑应用中,以提高性能,是一种可行的方法.
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