体纳米二氧化对纳米修饰水泥固化机制和水化过程的影响
Asmaa Nouh1, Hoda Abou-Shady2, Rehab O Abdel Rahman3
1Physics Department, Faculty of Science, Cairo University, Giza, Egypt. asmaanouh@gstd.sci.cu.edu.eg.
Scientific reports
|November 12, 2025
概括
体纳米 (CNS) 可以修改水泥基质,用于放射性废物固定. 最佳的中枢神经系统含量提高了耐用性,改变了水分,尽管压力强度可能会略有下降.
科学领域:
- 材料科学 材料科学 材料科学
- 核工程 核工程是指核工程.
- 土木工程 土木工程是指土木工程.
背景情况:
- 放射性废物固定需要耐用和稳定的矩阵.
- 通常使用的是水泥系统,但它们的性能可以增强.
- 体纳米 (CNS) 被探索为一种潜在的修饰剂.
研究的目的:
- 评估在放射性废物固定矩阵中使用CNS的可行性.
- 研究中枢神经系统对设置时间,稳定性,机械稳定性和微观结构的影响.
- 为CNS在水化和固化过程中的作用提供机械洞察力.
主要方法:
- 通过sol-gel方法合成中枢神经系统并描述其物理化学特性.
- 在不同剂量的简化水泥系统中集成的CNS.
- 在45天内评估了设置时间,稳定性,压力强度和微观结构演变.
主要成果:
- 中枢神经系统的结合改变了水化动力学和机械性能,提高了耐用性.
- 中枢神经系统加快了设置时间,其峰值效果为5 wt.%,并保持了可接受的稳定性高达3 wt.%.
- 压力强度通常随着中枢神经系统的增加而下降,但仍然高于固定值;在晚年时代,强度的发展变得特定于材料.
结论:
- 中枢神经系统是放射性废物固定矩阵的可行修饰器.
- 最佳的中枢神经系统含量 (大约3%重量) 通过增强的石灰反应和C-S-H形成,提高了耐用性.
- 中枢神经系统的补充会影响水化机制,促进核和生长,而不是扩散驱动的过程.
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