Experimental Modelling of Unsaturated Geomaterials

Auteur

Dr. Laureano Hoyos is full professor at the University of Texas at Arlington. He is the recipient at UTA of the Lockheed Martin Aeronautics Excellence in Teaching Award (2014), the Research Excellence Award (2009), the Outstanding Civil Engineering Instructor Award (2005), and the Outstanding Early Career Faculty Award (2003). He currently serves as chair of the Unsaturated Soils committee of the Geo-Institute of the ASCE.

Texte du rabat

Unsaturated soil mechanics represents a good deal of geotechnics practice worldwide, requiring refined analytical, testing and modelling methods. This book outlines experimental modelling of unsaturated silty sand, clayey silty sand, sandy silt, and silty clay, over a wide range of stress paths and modes of deformation, including suction controlled resonant column, bender element, biaxial (plane strain), triaxial (double-walled), true triaxial (cubical), and ring shear testing. It covers main testing procedures, key experimental results, and calibration protocols for constitutive modelling over a range of suction states (0- 300 MPa), using the axis-translation or vapour-pressure technique.

Résumé

Fundamental concepts of Unsaturated Soil Mechanics are being increasingly applied in the practice of geotechnics worldwide. The unique materials documented in this book stem from renewed momentum in a longstanding search for testing methodologies that are most suitable for modelling the engineering response of unsaturated soils, as the excitement in this area is providing more reliable analytical tools and yielding ever safer and more sustainable design guidelines. The book outlines recent advances in experimental modelling of unsaturated geomaterials, particularly cohesive-frictional soils, such as silty sand, clayey silty sand, sandy silt, and silty clay, over a wide range of stress paths and modes of deformation. Experimental techniques include suction-controlled resonant column, bender element, biaxial (plane strain), triaxial, true triaxial, and ring shear testing, via either axis-translation or vapour-pressure technique. The chapters cover main testing procedures, key experimental results, and calibration protocols for constitutive modelling of these materials over a relatively large range of matric and/or total suction states (0 300 MPa).

Contenu

Background and Scope. Suction-controlled Resonant Column/Bender Element Testing. Suction-controlled Plane Strain (Biaxial) Testing. Suction-controlled Triaxial (Double-walled) Testing. Suction-controlled True Triaxial (Cubical) Testing. Suction-controlled Ring Shear Testing. Appendix: Experimental Data.