关于波特兰水泥微观结构和机械性能的研究,其中包括酸废物
Valentin Antonovič1, Donatas Sikarskas1, Renata Boris1
1Laboratory of Composite Materials, Institute of Building Materials, Vilnius Gediminas Technical University, 10223 Vilnius, Lithuania.
Materials (Basel, Switzerland)
|January 23, 2024
概括
消耗液体催化裂变废物 (FCCW) 和金属废物 (MK) 加快水化水泥,改善硬化水泥糊的性能. 有FCCW和MK的复合粘合剂提高了压力强度,同时降低了水泥含量.
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.
- 废物管理 废物管理
背景情况:
- 波特兰水泥生产对二氧化碳排放作出了重大贡献.
- 利用像FCCW和MK这样的工业废物作为补充性水泥材料 (SCM) 提供了一个可持续的替代方案.
- 了解这些SCM对水泥水化和微观结构的影响对于其有效应用至关重要.
研究的目的:
- 为了研究酸pozzolanic废弃物,特别是FCCW和MK对硬化波特兰水泥糊的性能的影响.
- 分析水合,微观结构,密度和压力强度的水泥糊在部分替换水泥的FCCW和MK.
- 评估FCCW和MK在水泥应用中作为可持续的SCM的潜力.
主要方法:
- 用FCCW和MK部分替换波特兰水泥.
- 对硬化水泥糊的性能进行分析:水化,微观结构,密度和压力强度.
- 描述技术:X射线衍射 (XRD),热重力测量分析 (TG) 和扫描电子显微镜 (SEM).
主要成果:
- 由于高表面积和pozzolanic活动,FCCW加速了水泥水化.
- 复合粘合剂 (FCCW:MK at 1:1) 显示波特兰的结晶形成发生变化,波特兰含量减少.
- 在复合粘合剂样本中,XRD和TG证实了降低的波特兰.
- SEM揭示了微观结构的变化,包括C-S-H和C-A-S-H凝的形成.
- 复合粘合剂样本的压缩强度增加,尽管水泥含量较低.
结论:
- 酸聚酸盐废物 (FCCW和MK) 对水化和水泥微观结构产生积极影响.
- 使用FCCW和MK的复合粘合剂可以增强硬化水泥糊的机械性能.
- 这些发现支持使用FCCW和MK作为水泥材料的可持续替代品,减少对环境的影响.
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