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| Foreword | |
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| Preface | |
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| Symbols | |
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| Introduction | |
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| State Of Unsaturated Soil | |
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| Unsaturated Soil Phenomena | |
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| Definition of Unsaturated Soil Mechanics | |
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| Interdisciplinary Nature of Unsaturated Soil Mechanics | |
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| Classification of Unsaturated Soil Phenomena | |
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| Scope and Organization of Book | |
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| Chapter Structure | |
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| Geomechanics and Geo-environmental Tracks | |
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| Unsaturated Soil in Nature and Practice | |
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| Unsaturated Soil in Hydrologic Cycle | |
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| Global Extent of Climatic Factors | |
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| Unsaturated Zone and Soil Formation | |
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| Unsaturated Soil in Engineering Practice | |
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| Moisture, Pore Pressure, and Stress Profiles | |
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| Stress in the Unsaturated State | |
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| Saturated Moisture and Stress Profiles: Conceptual Illustration | |
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| Unsaturated Moisture and Stress Profiles: Conceptual Illustration | |
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| Illustrative Stress Analysis | |
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| State Variables, Material Variables, and Constitutive Laws | |
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| Phenomena Prediction | |
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| Head as a State Variable | |
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| Effective Stress as a State Variable | |
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| Net Normal Stresses as State Variables | |
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| Suction and Potential of Soil Water | |
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| Total Soil Suction | |
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| Pore Water Potential | |
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| Units of Soil Suction | |
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| Suction Regimes and the Soil-Water Characteristic Curve.Problems | |
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| Fundamental Principles | |
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| Material Variables | |
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| Physical Properties of Air and Water | |
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| Unsaturated Soil as a Multiphase System | |
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| Density of Dry Air | |
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| Density of Water | |
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| Viscosity of Air and Water | |
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| Flow Regimes | |
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| Partial Pressure and Relative Humidity | |
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| Relative Humidity in Unsaturated Soil Mechanics | |
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| Composition and Partial Pressure of Air | |
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| Equilibrium between Free Water and Air | |
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| Equilibrium between Pore Water and Air | |
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| Relative Humidity | |
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| Dew Point | |
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| Density of Moist Air | |
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| Effect of Water Vapor on Density of Air | |
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| Formulation for Moist Air Density | |
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| Surface Tension | |
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| Origin of Surface Tension | |
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| Pressure Drop across an Air-Water Interface | |
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| Cavitation of Water | |
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| Cavitation and Boiling | |
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| Hydrostatic Atmospheric Pressure | |
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| Cavitation Pressure.Problems | |
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| Interfacial Equilibrium | |
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| Solubility of Air in Water | |
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| Henry's Law | |
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| Temperature Dependence | |
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| Volumetric Coefficient of Solubility | |
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| Henry's Law Constant and Volumetric Coefficient of Solubility | |
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| Vapor Component Correction | |
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| Mass Coefficient of Solubility | |
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| Air-Water-Solid Interface | |
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| Equilibrium between Two Water Drops | |
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| Equilibrium at an Air-Water-Solid Interface | |
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| Contact Angle | |
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| Air-Water-Solid Interface in Unsaturated Soil | |
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| Vapor Pressure Lowering | |
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| Implications of Kelvin's Equation | |
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| Derivation of Kelvin's Equation | |
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| Capillary Condensation | |
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| Soil-Water Characteristic Curve | |
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| Soil Suction and Soil Water | |
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| Capillary Tube Model | |
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| Contacting Sphere Model | |
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| Concluding Remarks.Problems | |
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| Capillarity | |
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| Young-Laplace Equation | |
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| Three-Dimensional Meniscus | |
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| Hydrostatic Equilibrium in a Capillary Tube | |
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| Height of Capillary Rise | |
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| Capillary Rise in a Tube | |
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| Capillary Finger Model | |
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| Capillary Rise in Idealized Soil | |
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| Capillary Rise in Soil | |
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| Rate of Capillary Rise | |
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| Saturated Hydraulic Conductivity Formulation | |
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| Unsaturated Hydraulic Conductivity Formulation | |
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| Experimental Verification | |
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| Capillary Pore Size Distribution | |
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| Theoretical Basis | |
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| Pore Geometry | |
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| Computational Procedures | |
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| Suction Stress | |
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| For | |