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Informationen zum Autor Professor Lyesse Laloui is Director of the Laboratory of Soil Mechanics, Swiss Federal Institute of Technology, Lausanne, Switzerland and Adjunct Professor in the Civil and Environmental Engineering Department, Duke University, Durham, USA. Klappentext This book provides a sound basis in the challenging area of the mechanics of unsaturated geomaterials. The objective is to supply the reader with an exhaustive overview starting from the basics and covering the most recent theories and applications (i.e. natural disasters, nuclear waste disposal, oil and agriculture productions). The presentation of the fundamental concepts is based on an interdisciplinary approach, in the areas of soil, rock and cement-based material mechanics. Zusammenfassung This book provides a sound basis in the challenging area of the mechanics of unsaturated geomaterials. The objective is to supply the reader with an exhaustive overview starting from the basics and covering the most recent theories and applications (i.e. natural disasters, nuclear waste disposal, oil and agriculture productions). Inhaltsverzeichnis Preface xv Lyesse LALOUI PART I. FUNDAMENTAL CONCEPTS 1 Chapter 1. Basic Concepts in the Mechanics and Hydraulics of Unsaturated Geomaterials 3 Alessandro TARANTINO 1.1. Water retention mechanisms in capillary systems 4 1.2. Water retention behavior of geomaterials 9 1.3. Water retention mechanisms in geomaterials and the concept of suction 11 1.4. Water flow in capillary systems 18 1.5. Mechanical interactions at the microscale 20 1.6. Microscopic interpretation of volumetric"collapse " and shear strength 23 1.7. Bibliography 27 Chapter 2. Mechanics of Unsaturated Soils 29 Lyesse LALOUI, Mathieu NUTH and Bertrand FRANCOIS 2.1. Introduction 29 2.2. Stress states 30 2.3. Thermo-hydro-mechanical behavior of unsaturated soils 31 2.4. Effective stress in unsaturated soils 39 2.5. A coupled THM constitutive framework for unsaturated soils 43 2.6. Conclusion 51 2.7. Bibliography 51 Chapter 3. Desiccation Cracking of Soils 55 Herve PERON, Lyesse LALOUI, Liang-Bo HU and Tomasz HUECKEL 3.1. Introduction 55 3.2. Physical processes involved in desiccation cracking of soils 56 3.3. Experimental characterization of desiccation process in soils and its controlling variables 69 3.4. Scenarios of soil desiccation crack pattern formation 74 3.5. Conclusion 79 3.6. Bibliography 80 PART II. EXPERIMENTAL CHARACTERIZATION 87 Chapter 4. Experimental Techniques for Unsaturated Geomaterials 89 Pierre DELAGE 4.1. Introduction 89 4.2. Techniques for controlling suction 90 4.3. Techniques for measuring suction 94 4.4. Mechanical testing devices 97 4.5. Concluding remarks 104 4.6. Bibliography 105 Chapter 5. New Experimental Tools for the Characterization of Highly Overconsolidated Clayey Materials in Unsaturated Conditions 113 Simon SALAGER, Alessio FERRARI and Lyesse LALOUI 5.1. Introduction 113 5.2. Sorption bench 114 5.3. High pressure THM oedometric cell 118 5.4. High pressure and high temperature THM triaxial cell 122 5.5. Conclusions 126 5.6. Bibliography 126 Chapter 6. Field Measurement of Suction, Water Content and Water Permeability 129 Alessandro TARANTINO 6.1. Direct measurement of suction 129 6.2. Indirect measurement of suction 136 6.3. Measurement of water content 140 6.4. Field measurement of water permeability 150 6.5. Bibliography 151 PART III. THEORITICAL DEVELOPMENTS 155 Chapter 7. Hydromechanical Coupling ...
