改性材料对土的液压导电性的影响
Lina Guo1, Yongbo Zhang2, Hong Shi3
1Taiyuan University of Technology, Taiyuan, China.
Scientific reports
|April 10, 2025
概括
用纳米粘土等添加剂修改泥土,显著降低了液压导电性,使其适合填埋场内. 这项研究探讨了飞灰,纳米二氧化和纳米粘土,以有效改善土.
科学领域:
- 地质技术工程 地质技术工程
- 环境工程 环境工程
- 材料科学 材料科学 材料科学
背景情况:
- 在洛斯高原,满足不透性要求的天然粘土资源稀缺.
- 对于开发有效的垃圾填埋障碍,土改造是必不可少的.
- 了解修改对Loess液压导电性的影响至关重要.
研究的目的:
- 为了研究飞灰,纳米二氧化和纳米粘土对洛斯液压导电性的影响.
- 分析导致液压导电性变化的潜在机制.
- 评估改性的适用于垃圾填埋应用的适用性.
主要方法:
- 用不同的修改率 (1%, 3%, 7%) 实验确定液压导电性.
- 使用X射线衍射 (XRD),FTIR,SEM,BET和CT进行先进的材料表征.
- 微观结构变化和孔隙特征的分析.
主要成果:
- 纳米粘土修改显著降低了洛斯液压导电性,在7%的应用下达到8.0 × 10−8 cm s−1.
- 观察到水力导电率降低了62.96% (飞),94.81% (纳米二氧化) 和97.07% (纳米粘土).
- 有7%纳米粘土的改性合物符合家用垃圾填埋场内的反漏标准.
结论:
- 修改后的土表现出更好的微观结构和表面特性,减少孔隙性和增强颗粒结合.
- 波佐兰反应的副产品和修饰物颗粒填充了间隙空间,减少了有效的透路径.
- 纳米粘土在降低石液压导电性方面非常有效,为石基础改造技术提供了基础.
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