General Aspects -- Energy Methods for Constitutive Modelling in Geomechanics -- Physical Background of Hypoplasticity -- Thermodynamics of Porous Continua -- Effective Stress Formulation of Unsaturated Soil Mechanics -- Progress in Binary Medium Modeling of Geological Materials -- Constitutive Modelling -- Generic Constitutive Ingredients in CSSM Models for Sands -- State Boundary Surface in Hypoplasticity -- Modelling of Bonded Soils with Unstable Structure -- An Evaluation of Different Constitutive Models to Predict the Directional Response of a Reconstituted Fine-Grained Soil -- Two Elastoplastic Models for Small and Large Strains and Their Use in Engineering Practise -- Elastic Visco-Plastic Models for the Time-Dependent Stress-Strain Behaviour of Geomaterials -- Micromechanics -- Micro-Polar Effects under Monotonic and Cyclic Shearing -- Modeling the Post-localization Regime with Local Second Gradient Models: Non-uniqueness of Solutions and Nonpersistent Shear Bands -- Confined Compression and Rod Penetration of a Dense Granular Medium: Discrete Element Modelling and Validation -- Application of Discrete Element Method to Geomechanics -- The Role of Particle Crushing in Granular Materials -- Micromechanical Study of Damage and Permeability Variation in Brittle Rocks -- Analytical and Numerical Methods -- Hydrologically Driven Slope Failure Initiation in Variably Saturated Porous Media -- A Survey of Some Mathematical Results for Highly Frictional Granular Materials -- Double-Slip and Spin: Dilatant Shear in a Reduced Cosserat Model -- The Linear Matching Method for Limit and Shakedown Analysis -- On Recent Analytical Results for Advective Transport in Fluid-Saturated Porous Media -- Granular Materials: Theory and Experiment -- Unusual Soil Behaviour and its Challenge to Constitutive Modelling -- Histotropy of Hostun RF Loose Sand -- Incremental Nonlinearity in Phenomenological and Multiscale Constitutive Relations -- Long-term Deformations in Soils due to Cyclic Loading -- On the Factors Affecting the Formation of Shear Band Systems in Non-Cohesive Soils Under Extensional Strain -- Acceleration Waves in Hypoplasticity - 2D Analysis -- Engineering Applications -- Static and Cyclic Behavior of a Silty Sand According to Tests on Undisturbed Samples -- The Role of Analysis in Non-Displacement Pile Design -- Assessment of Uncertainties in Wellbore Stability Analysis.