Hydraulic Properties of Swelling Clay-Gel Soils: Electrolyte and Temperature Effects

膨胀粘土凝胶土的水力特性：电解质和温度的影响

• 批准号: DP0345145
• 负责人: Dr Bennett Macdonald
• 金额: $ 9.2万
• 依托单位: The Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2003
• 资助国家: 澳大利亚
• 起止时间: 2003-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0345145
• 关键词: Hydraulic; Properties; Swelling; Clay; Gel

We seek to understand the impacts of electrolytes and temperature on the equilibrium and water flow properties of swelling, clay-gel soils. These soils are important in cropping, the environment and industrial processes. Their hydraulic properties govern dewatering rates, rheology, and solute movement. Double layer theory (DLVO) successfully describes the equilibrium behaviour of model, parallel-plate clay systems in laboratories. However, equilibrium and water transport properties of less-ideal, clay slurries are poorly described by theory. Field clay-gels are therefore problematic. Outcomes will be better understanding of swelling clays, improved and more cost effective management techniques for gel soils and trained graduates.

我们试图了解电解质和温度对膨胀粘土凝胶土壤的平衡和水流特性的影响。这些土壤对于种植、环境和工业过程都很重要。它们的水力特性决定脱水速率、流变性和溶质运动。双层理论 (DLVO) 成功描述了实验室中模型平行板粘土系统的平衡行为。然而，理论描述不太理想的粘土浆的平衡和水传输特性。因此，现场粘土凝胶是有问题的。结果将是更好地了解膨胀粘土、改进和更具成本效益的凝胶土壤管理技术以及训练有素的毕业生。