What is included with this book?
Vinayagamoothy Sivakumar is Senior Lecturer at Queen's University Belfast, UK
Preface | p. viii |
Acknowledgments | p. x |
Introduction | p. xi |
Symbols | p. xiii |
Properties of Unsaturated Soils | p. 1 |
Nature and genesis of unsaturated soils | p. 1 |
Soil variables | p. 3 |
Particle properties | p. 7 |
Phase properties and interactions | p. 9 |
Soil structure | p. 22 |
Experimental techniques for examining pore size distribution | p. 23 |
Pore size distribution | p. 25 |
Conclusions | p. 32 |
Suction Measurement and Control | p. 34 |
Introduction | p. 34 |
Techniques for measurement of suction | p. 35 |
Control of suction in laboratory tests | p. 52 |
Conclusions | p. 56 |
Laboratory Techniques | p. 57 |
Introduction | p. 57 |
Material selection and specimen preparation | p. 58 |
Experimental techniques for volume change and strength measurements | p. 64 |
Essential measurements | p. 69 |
Further details of triaxial and stress path testing techniques | p. 71 |
Conclusions | p. 85 |
Background to the Stresses, Strains, Strength, Volume Change and Modelling of Unsaturated Soil | p. 87 |
Introduction | p. 87 |
Stresses in soils | p. 88 |
Strains in soils | p. 90 |
Constitutive modelling | p. 92 |
Critical state framework for saturated soils | p. 98 |
The constitutive Barcelona Basic Model for unsaturated soils | p. 107 |
Extended constitutive and elasto-plastic critical state frameworks for unsaturated soils | p. 112 |
Concluding remarks | p. 123 |
Thermodynamics of Soil Systems | p. 127 |
Introduction | p. 127 |
Outline of thermodynamic principles and systems | p. 128 |
Introduction to equilibrium and meta-stable equilibrium | p. 129 |
Variables of state | p. 130 |
Extensive and intensive variables | p. 131 |
The laws of thermodynamics | p. 131 |
Thermodynamic potentials | p. 135 |
Thermodynamic potentials in practice | p. 138 |
Conjugate thermodynamic pairings | p. 142 |
Influence of a gravitational field | p. 144 |
Concluding remarks | p. 145 |
Equilibrium Analysis and Assumptions in Triaxial Testing | p. 147 |
Introduction | p. 147 |
The minimum principles for the potentials | p. 147 |
Isotropic loading conditions | p. 149 |
Anisotropic loading conditions | p. 152 |
Work input and the thermodynamic potential | p. 155 |
The thermodynamic potential and axis translation | p. 156 |
The thermodynamic potential and an aggregated soil structure | p. 157 |
Conclusions | p. 158 |
Enthalpy and Equilibrium Stress Conditions in Unsaturated Soils | p. 160 |
Introduction | p. 160 |
Role of enthalpy | p. 160 |
Enthalpy and Terzaghi's effective stress for saturated soils | p. 162 |
Enthalpy of unsaturated soils | p. 163 |
The significance of ¿ | p. 167 |
Stress state in unsaturated soils | p. 171 |
Alternative equilibrium analysis | p. 172 |
Graphical representation of stress state in unsaturated soils | p. 173 |
Stress state variables and conjugate volumetric variables | p. 174 |
Hysteresis, collapse and discontinuities in soil behaviour | p. 176 |
Conclusions | p. 179 |
Shear Strength and Compression Characteristics of Unsaturated Soils | p. 180 |
Introduction | p. 180 |
Shear strength and critical state characteristics of unsaturated soils | p. 181 |
Equivalent strength parameters | p. 200 |
Compression and critical state characteristics of unsaturated kaolin | p. 200 |
Modelling of unsaturated kaolin | p. 206 |
Structure, variables and parameters | p. 208 |
Conclusions | p. 210 |
Work Input, Conjugate Variables and Load-Deformation Behaviour of Unsaturated Soils | p. 213 |
Introduction | p. 213 |
Work input under triaxial stress conditions | p. 213 |
Components of the deviator stress | p. 218 |
Work input to unsaturated soils | p. 218 |
Analysis of the mobilised stress ratios | p. 220 |
Continuity relationship between strain-increments | p. 221 |
Stress state variables and conjugate volumetric and strain-increment variables | p. 223 |
The meaning and interpretation of stresses and strains | p. 224 |
Analysis of triaxial experimental data on kaolin | p. 232 |
Conclusions | p. 251 |
References | p. 254 |
Index | p. 273 |
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