Unsaturated Soil Mechanics
1. Edition June 2004
584 Pages, Hardcover
Handbook/Reference Book
Short Description
This groundbreaking book is the first to introduce the fundamental governing principles of unsaturated soil mechanics. Focus is given to principles rather than specific applications, making this unique volume more broadly applicable and adaptable. Its easy-to-follow approach is based on the mechanisms for soil suction and suction induced stress; the relation between soil suction and effective stress; and soil strength and deformation.
Unsaturated Soil Mechanics is the first book to provide a comprehensive introduction to the fundamental principles of unsaturated soil mechanics.
* Offers extensive sample problems with an accompanying solutions manual.
* Brings together the rapid advances in research in unsaturated soil mechanics in one focused volume.
* Covers advances in effective stress and suction and hydraulic conductivity measurement.
PREFACE.
SYMBOLS.
INTRODUCTION.
1 STATE OF UNSATURATED SOIL.
1.1 Unsaturated Soil Phenomena.
1.2 Scope and Organization of Book.
1.3 Unsaturated Soil in Nature and Practice.
1.4 Moisture, Pore Pressure, and Stress Profiles.
1.5 State Variables, Material Variables, and Constitutive Laws.
1.6 Suction and Potential of Soil Water.
Problems.
I FUNDAMENTAL PRINCIPLES.
2 MATERIAL VARIABLES.
2.1 Physical Properties of Air and Water.
2.2 Partial Pressure and Relative Humidity.
2.3 Density of Moist Air.
2.4 Surface Tension.
2.5 Cavitation of Water.
Problems.
3 INTERFACIAL EQUILIBRIUM.
3.1 Solubility of Air in Water.
3.2 Air-Water-Solid Interface.
3.3 Vapor Pressure Lowering.
3.4 Soil-Water Characteristic Curve.
Problems.
4 CAPILLARITY.
4.1 Young-Laplace Equation.
4.2 Height of Capillary Rise.
4.3 Rate of Capillary Rise.
4.4 Capillary Pore Size Distribution.
4.5 Suction Stress.
Problems.
II STRESS PHENOMENA.
5 STATE OF STRESS.
5.1 Effective Stress in Unsaturated Soil.
5.2 Hysteresis.
5.3 Stress Tensor Representation.
5.4 Stress Control by Axis Translation.
5.5 Graphical Representation of Stress.
Problems.
6 SHEAR STRENGTH.
6.1 Extended Mohr-Coulomb (M-C) Criterion.
6.2 Shear Strength Parameters for the Extended M-C Criterion.
6.3 Effective Stress and the M-C Criterion.
6.4 Shear Strength Parameters for the M-C Criterion.
6.5 Unified Representation of Failure Envelope.
Problems.
7 SUCTION AND EARTH PRESSURE PROFILES.
7.1 Steady Suction and Water Content Profiles.
7.2 Steady Effective Stress Parameter and Stress Profiles.
7.3 Earth Pressure at Rest.
7.4 Active Earth Pressure.
7.5 Passive Earth Pressure.
Problems.
III FLOW PHENOMENA.
8 STEADY FLOWS.
8.1 Driving Mechanisms for Water and Airflow.
8.2 Permeability and Hydraulic Conductivity.
8.3 Hydraulic Conductivity Function.
8.4 Capillary Barriers.
8.5 Steady Infiltration and Evaporation.
8.6 Steady Vapor Flow.
8.7 Steady Air Diffusion in Water.
Problems.
9 TRANSIENT FLOWS.
9.1 Principles for Pore Liquid Flow.
9.2 Rate of Infiltration.
9.3 Transient Suction and Moisture Profiles.
9.4 Principles for Pore Gas Flow.
9.5 Barometric Pumping Analysis.
Problems.
IV MATERIAL VARIABLE MEASUREMENT AND MODELING.
10 SUCTION MEASUREMENT.
10.1 Overview of Measurement Techniques.
10.2 Tensiometers.
10.3 Axis Translation Techniques.
10.4 Electrical/Thermal Conductivity Sensors.
10.5 Humidity Measurement Techniques.
10.6 Humidity Control Techniques.
10.7 Filter Paper Techniques.
Problems.
11 HYDRAULIC CONDUCTIVITY MEASUREMENT.
11.1 Overview of Measurement Techniques.
11.2 Steady-State Measurement Techniques.
11.3 Transient Measurement Techniques.
Problems.
12 SUCTION AND HYDRAULIC CONDUCTIVITY MODELS.
12.1 Soil-Water Characteristic Curve Models.
12.2 Hydraulic Conductivity Models.
Problems.
REFERENCES.
INDEX.
WILLIAM J. LIKOS, PhD, is Assistant Professor of Civil and Environmental Engineering at the University of Missouri--Columbia, where he teaches courses in soil mechanics and soil behavior. He is a former geotechnical engineer with the U.S. Geological Survey. He is the author of numerous papers regarding unsaturated and expansive soil behavior, an editorial board member for the Geotechnical Testing Journal, and a member of ASCE and the Clay Minerals Society.
