开发类似材料用于测试流体 - 固体合模型,并在损坏构成模型中应用
Xu Ren1, Guihong Xu2, Ziwei Chen1
1College of Civil Engineering, Guizhou Institute of Technology, Guiyang, 520025, China.
Scientific reports
|June 26, 2024
概括
这项研究研究了用于流体-固体合试验的材料特性. 结果显示,聚合物类型和修饰剂显著影响强度和吸水能力,为坡度稳定性提供岩石力学模型的信息.
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
- 岩石机械学 岩石机械学
背景情况:
- 精确的材料选择对于流体-固体合模型测试至关重要.
- 了解复合材料在应力和水透下的机械行为对于地质技术应用至关重要.
研究的目的:
- 为了确定流体-固体合模型测试的最佳材料组成.
- 调查聚合物类型和修饰剂对材料性能的影响.
- 为岩石在雨水透的三轴压缩下开发损害构成模型.
主要方法:
- 使用铁缩粉,巴里特粉,水泥,石膏和粘土进行直角实验设计.
- 机械性能测试包括压力强度,弹性模量和凝聚力.
- 基于韦布尔统计损害理论的损害构成模型的开发.
主要成果:
- 聚合物类型 (ATC) 显著控制强度和吸水能力;增加的ATC比率会降低这些特性.
- 石膏和水泥不会协同增强强度;增加的石膏含量 (GTC) 会增加水的吸收,但会降低软化和透系数.
- 建立了损伤构成模型,显示了由于孔隙影响而与实验结果的偏差,特别是在更高的限制压力下.
结论:
- 材料成分,特别是聚合物类型和石膏含量,极大地影响了测试材料的机械和液压性能.
- 开发的损坏模型有效地描述了在加载和雨水透下岩石破裂,为斜坡稳定性分析提供了理论基础.
- 特定的石膏含量 (4-16%的水泥) 适用于研究沉积岩类同类物质的液压性能.
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