在Goaf侵蚀环境下新接填充材料的性能降解机制
Han Yang1, Junwu Xia1, Yujing Wang1
1State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China.
Materials (Basel, Switzerland)
|November 27, 2025
概括
这项研究引入了一种新的接材料 (ESGF材料),以防止陷. 它发现,虽然硫酸盐和化物侵蚀都会降低ESGF材料的强度,但调整其成分和使用硫酸盐维护可以提高其在盐水环境中的耐力.
科学领域:
- 地质技术工程 地质技术工程
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 在高峰区的二次激活带来了结构性挑战.
- 在粗的环境中,离子侵蚀会降解传统的填充材料.
- ECS土壤接填充材料 (ESGF材料) 是一种用于稳定的新解决方案.
研究的目的:
- 调查ESGF材料在硫酸盐和化物侵蚀下的性能退化.
- 了解由于离子侵蚀而导致的ESGF材料的宏观机械和微观结构变化.
- 确定影响ESGF材料抗离子侵蚀的因素,并提出增强策略.
主要方法:
- 在不同混合设计的ESGF材料样本上进行侵蚀测试.
- 通过不受限制的压力强度 (UCS) 评估宏观机械性能.
- 使用SEM,XRD,TG,FTIR和拉曼光谱的微结构分析.
主要成果:
- 硫酸盐和化物侵蚀都会降低ESGF材料的强度,最初的质量增加随后减少.
- 硫酸盐侵蚀会导致由于乙化石 (AFt) 和化石 (TSA) 的形成而造成显著的内部损伤.
- 化物侵蚀,主要形成弗里德尔盐,降解程度较低;水泥含量和快速定位元件影响侵蚀抵抗.
结论:
- 通过调整快速设置组件和利用硫酸盐维护,可以提高ESGF材料的抗离子侵蚀性能.
- 欧洲社会保障基金 (ESGF) 材料显示出适用于高盐度接环境的适用性,解决沉降问题并促进固体废物回收利用.
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