对石墨烯氧化物修饰的CSH与结解循环的特性进行分子动力学研究
Yu Chen1, Jiawen Zhu2, Linlong Zhen2
1Department of Civil Engineering, Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang, People's Republic of China. chenyu_ujs@163.com.
Journal of molecular modeling
|January 21, 2026
概括
石墨烯氧化物 (GO) 通过在分子层面稳定其结构来增强水泥的抗性. 这项研究使用了分子动力学来证明GO增强了酸水合物 (CSH) 对融损伤的作用.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 土木工程 土木工程是指土木工程.
背景情况:
- 结解周期会对水泥材料造成显著的微观结构损伤,损害其耐用性.
- 众所周知,氧化石墨烯 (GO) 可以提炼水泥微结构,但其改善抗的具体机制尚未完全理解.
- 了解分子相互作用对于开发耐用的水泥复合材料至关重要.
研究的目的:
- 使用分子动力学 (MD) 研究石墨烯氧化物 (GO) 增强酸水合物 (CSH) 抗的分子机制.
- 阐明GO如何影响CSH微观结构及其对原子水平结解周期的反应.
- 提供关于纳米修饰水泥材料耐用性的理论见解.
主要方法:
- 使用LAMMPS与ReaxFF力场进行了分子动力学 (MD) 模拟.
- 沿着CSH模型的Z轴应用了一个循环应变 (最大振幅为0.15),以模拟融损伤.
- 分析的重点是界面结构,键和机械性能.
主要成果:
- GO与CSH矩阵形成强大的键,从而形成密集的界面结构.
- GO稳定了CSH内部的结网,减轻了降解.
- 与冷解条件下的纯净CSH相比,GO修改的CSH表现出较低的峰值压力损失和弹性模量.
结论:
- 石墨烯氧化物通过在分子水平上加强CSH结构来增强水泥材料的抗性.
- GO可以提高水泥复合材料对结解周期的耐损性.
- 这项研究为GO的保护机制提供了分子层面的理解,支持了先进的水泥材料的开发.
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