酸和可溶酸对氧化水泥的性能的影响
Qing Huang1,2, Su Wang3, Yongsheng Du4
1School of Materials Science and Engineering, Shaanxi University of Technology, Hanzhong 723001, China.
Materials (Basel, Switzerland)
|October 16, 2024
概括
将酸及其酸盐添加到氧化水泥 (MOC) 中,可以缩短定时间并提高耐水性. 这一修改增强了MOC的功能.
科学领域:
- 材料科学 材料科学 材料科学
- 水泥化学 水泥化学
- 无机化学 无机化学
背景情况:
- 氧化水泥 (MOC) 是一种多用途的粘合剂,在建筑领域具有应用.
- MOC的性能,特别是其耐水性和结性,可能会受到添加剂的影响.
- 了解这些影响对于优化MOC配方至关重要.
研究的目的:
- 研究酸 (H3PO4),二酸 (KH2PO4) 和二酸 (NaH2PO4) 对MOC特性的影响.
- 分析修改MOC的水化产品和微观结构.
- 为了评估由此产生的设置时间,压力强度和防水性能的变化.
主要方法:
- 用不同的酸盐添加剂制备MOC样品.
- 使用X射线衍射 (XRD) 分析水化产品.
- 通过扫描电子显微镜 (SEM) 进行微结构检查.
- 测试设置时间,压力强度和耐水性 (软化系数).
主要成果:
- 酸盐添加剂减少了MOC的初始和最终设置时间.
- 压力强度最初下降,但在14天后超过30.00 MPa,H3PO4的重量为2.0%.
- 显著改善了耐水性,MOC的软化系数与2.0重量%的H3PO4比整洁的MOC高3.44倍.
- 提高耐水性的顺序是H3PO4 > KH2PO4 > NaH2PO4.
结论:
- 酸及其酸盐有效地改变MOC的特性.
- 添加剂通过形成无形凝来增强MOC的耐水性.
- 优化的酸盐含量可以保持可接受的压力强度,同时显著提高耐用性.
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