Water repellent soils: the case for unsaturated soil mechanics
Water repellent soils: the case for unsaturated soil mechanics
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防水土：非饱和土力学案例
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
D. Toll
中科院分区：
文献类型：
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作者：
C. Beckett;A. Fourie;D. Toll
土壤科学家对防水（或“疏水”或“不润湿”）土壤的研究已经有一个多世纪了。这些土壤的特点是水渗透性差，导致水土流失加剧和作物生长不良。然而，岩土工程师现在已经认识到防水性对于确定土壤特性的重要性。例如，防水土壤可以为覆盖市政或矿山废物储存设施的覆盖系统的设计提供新颖的解决方案。然而，对影响其机械性能的因素的研究最近才开始。本文的目的是向岩土工程师介绍防水土的概念，并讨论如何在非饱和土框架下评估其特性。介绍了防水性能可能与岩土工程应用相关的场景，以及在实验室和现场检查中量化这些性能的方法。
Water repellent (or “hydrophobic” or “non-wetting”) soils have been studied by soil scientists for well over a century. These soils are typified by poor water infiltration, which leads to increased soil erosion and poor crop growth. However, the importance of water repellence on determining soil properties is now becoming recognised by geotechnical engineers. Water repellent soils may, for example, offer novel solutions for the design of cover systems overlying municipal or mine waste storage facilities. However, investigations into factors affecting their mechanical properties have only recently been initiated. This purpose of this paper is to introduce geotechnical engineers to the concept of water repellent soils and to discuss how their properties can be evaluated under an unsaturated soils framework. Scenarios in which water repellent properties might be relevant in geotechnical applications are presented and methods to quantify these properties in the laboratory and in the field examined.