Unsaturated Soil Concepts and Their Application in Geotechnical Practice

Author: David G. Toll
Publisher: Springer Science & Business Media
ISBN: 9401597758
Format: PDF, ePub, Docs
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model. They conclude that the models using three fitting parameters provide the best fit over a wide range of suctions. Models for soil-water characteristic curves are only useful if we have experimental data on which to base them. Agus, Leong and Rahardjo (Singapore) present a large number of experimental soil-water characteristic curves determined for two types of residual soil from Sigapore. They present data for eight different sites. This data set allows them to relate the parameters of the soil-water characteristic curves to index properties. They conclude that the relationships derived are suitable to pro vide a quick preliminary estimate of a soil-water characteristic curve. The importance of soil-water characteristic curves is emphasized by another con tribution dealing with this topic. Aung, Rahardjo, Leong and Toll (Singapore) inves tigate the relationship between mercury intrusion porosimetry measurements and soil-water characteristic curves. The porosimetry measurements are presented as soil-air characteristic curves. The slopes of the soil-air characteristic curves are found to be similar to the slopes of the soil-water characteristic curves. The equiv alent pore diameters calculated from the mercury entry value and the air entry value appear to be related. Therefore, it is suggested that porosimetry data can be used to construct an estimate of the soil-water characteristic curve.

Handbook of Tropical Residual Soils Engineering

Author: Bujang B.K. Huat
Publisher: CRC Press
ISBN: 0203098323
Format: PDF, ePub, Docs
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Residual soils are found in many parts of the world. Like other soils, they are used extensively in construction, either to build upon, or as construction material. They are formed when the rate of rock weathering is more rapid than transportation of the weathered particles by e.g., water, gravity and wind, which results in a large share of the soils formed remaining in place. The soils typically retain many of the characteristics of the parent rock. In a tropical region, residual soil layers can be very thick, sometimes extending to hundreds of meters before reaching un-weathered rock. Unlike the more familiar transported sediment soil, the engineering properties and behaviour of tropical residual soils may vary widely from place to place depending upon the rock of origin and the local climate during their formation; and hence are more difficult to predict and model mathematically. Despite their abundance and significance our knowledge and understanding of these soils is not as extensive as that of transported sediment soil. Written by residual soil specialists from various parts of the world, this unique handbook presents data, knowledge and expertise on the subject. It provides insight into the engineering behaviour of tropical residual soils, which will be applicable to small or extensive construction works worldwide on such soils. This book covers almost all aspects of residual soils, from genesis, classification, formation, sampling and testing to behaviour of weakly bonded and unsaturated soil, volume change and shear strength. It features chapters on applications in slopes and foundation, as well as dedicated parts on residual soils in India, Hong Kong and Southeast Asia. A large number of graphs, tables, maps and references throughout the text provide further detail and insight. This volume is intended as a reference guide for practitioners, researchers and advanced students in civil, construction and geological engineering. Unique in its coverage of the subject, it may serve as a standard that benefits every engineer involved in geological, foundation and construction work in tropical residual soils.

Proceedings of GeoShanghai 2018 International Conference Multi physics Processes in Soil Mechanics and Advances in Geotechnical Testing

Author: Liangbo Hu
Publisher: Springer
ISBN: 981130095X
Format: PDF, Mobi
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This book is the second volume of the proceedings of the 4th GeoShanghai International Conference that was held on May 27 - 30, 2018. This conference showcased the recent advances and technology in geotechnical engineering, geoenvironmental engineering and transportation engineering. This volume, entitled “Multi-physics Processes in Soil Mechanics and Advances in Geotechnical Testing”, covers a wide range of topics in soil mechanics, focusing on the behaviours of partially saturated soils, combined effects of multi-physics processes in geological materials and systems, and emerging methods and techniques in geotechnical in-situ testing and monitoring. This book may benefit researchers and scientists from the academic fields of soil and rock mechanics, geotechnical engineering, geoenvironmental engineering, transportation engineering, geology, mining and energy, as well as practical engineers from the industry. Each of the papers included in this book received at least two positive peer reviews. The editors would like to express their sincerest appreciation to all of the anonymous reviewers all over the world, for their diligent work.

Unsaturated Soils Advances in Geo Engineering

Author: D.G. Toll
Publisher: CRC Press
ISBN: 9780203884430
Format: PDF, ePub
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Unsaturated Soils: Advances in Geo-Engineering comprises 136 contributions from leading international researchers and practitioners, presented at the First European Conference on Unsaturated Soils (Durham, UK, 2-4 July 2008). The papers report on the latest advances in geo-engineering aspects of unsaturated soils. It is the first collection to focus on research developments within Europe, where a resurgence of interest in unsaturated soil behaviour has lead to major advances. The volume is divided into five sections: - Advances in testing techniques, - Engineering behaviour, -Constitutive modelling, - Numerical modelling, -Case histories. The areas of application include slope stability, foundations, dams, contaminated land, landfill and nuclear waste repositories. The section on advances in testing techniques includes recent developments in high capacity tensiometers, spatial Time Domain Reflectometry and Environmental Scanning Electron Microscopy. The section on engineering behaviour includes the latest findings concerning factors affecting the water retention surface; volume change of soils during wetting and drying; peak, ultimate and residual strength of soils; small strain modulii and shear wave responses. The sections on Constitutive and Numerical modelling address major developments in coupled thermo-hydro-mechanical elasto-plastic models. Unsaturated Soils: Advances in Geo-Engineering contains 90 papers from 15 countries within Europe with a further 46 contributions from 15 other countries, and is a comprehensive collection that will be essential referencematerial for geo-engineers around the world.

Who s Who in Computational Science and Engineering

Author: Saxe-Coburg Publications
Publisher:
ISBN: 9781874672180
Format: PDF
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The achievements and biographical details of nearly 1,500 key researchers and practitioners in the fields of computational mechanics, applied mathematics, computer science, artificial intelligence, aerospace, aeronautical, chemical, civil, environmental, mechanical, and structural engineering are included in this directory.

Unsaturated Soil Mechanics in Engineering Practice

Author: Delwyn G. Fredlund
Publisher: John Wiley & Sons
ISBN: 1118280504
Format: PDF, Kindle
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The definitive guide to unsaturated soil— from theworld's experts on the subject This book builds upon and substantially updates Fredlund andRahardjo's publication, Soil Mechanics for UnsaturatedSoils, the current standard in the field of unsaturated soils.It provides readers with more thorough coverage of the state of theart of unsaturated soil behavior and better reflects the manner inwhich practical unsaturated soil engineering problems are solved.Retaining the fundamental physics of unsaturated soil behaviorpresented in the earlier book, this new publication places greateremphasis on the importance of the "soil-water characteristic curve"in solving practical engineering problems, as well as thequantification of thermal and moisture boundary conditions based onthe use of weather data. Topics covered include: Theory to Practice of Unsaturated Soil Mechanics Nature and Phase Properties of Unsaturated Soil State Variables for Unsaturated Soils Measurement and Estimation of State Variables Soil-Water Characteristic Curves for Unsaturated Soils Ground Surface Moisture Flux Boundary Conditions Theory of Water Flow through Unsaturated Soils Solving Saturated/Unsaturated Water Flow Problems Air Flow through Unsaturated Soils Heat Flow Analysis for Unsaturated Soils Shear Strength of Unsaturated Soils Shear Strength Applications in Plastic and LimitEquilibrium Stress-Deformation Analysis for Unsaturated Soils Solving Stress-Deformation Problems with Unsaturated Soils Compressibility and Pore Pressure Parameters Consolidation and Swelling Processes in Unsaturated Soils Unsaturated Soil Mechanics in Engineering Practice isessential reading for geotechnical engineers, civil engineers, andundergraduate- and graduate-level civil engineering students with afocus on soil mechanics.

Geotechnical and Geoenvironmental Engineering Handbook

Author: R. Kerry Rowe
Publisher: Springer Science & Business Media
ISBN: 146151729X
Format: PDF, ePub
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Preface. Dedication. List of Figures. List of Tables. List of Contributors. Basic Behavior and Site Characterization. 1. Introduction; R.K. Rowe. 2. Basic Soil Mechanics; P.V. Lade. 3. Engineering Properties of Soils and Typical Correlations; P.V. Lade. 4. Site Characterization; D.E. Becker. 5. Unsaturated Soil Mechanics and Property Assessment; D.G. Fredlund, et al. 6. Basic Rocks Mechanics and Testing; K.Y. Lo, A.M. Hefny. 7. Geosynthetics: Characteristics and Testing; R.M. Koerner, Y.G. Hsuan. 8. Seepage, Drainage and Dewatering; R.W. Loughney. Foundations and Pavements. 9. Shallo.

Soil Mechanics

Author: William Powrie
Publisher: CRC Press
ISBN: 1466552484
Format: PDF, ePub, Mobi
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Instead of fixating on formulae, Soil Mechanics: Concepts and Applications, Third Edition focuses on the fundamentals. This book describes the mechanical behaviour of soils as it relates to the practice of geotechnical engineering. It covers both principles and design, avoids complex mathematics whenever possible, and uses simple methods and ideas to build a framework to support and accommodate more complex problems and analysis. The third edition includes new material on site investigation, stress-dilatancy, cyclic loading, non-linear soil behaviour, unsaturated soils, pile stabilization of slopes, soil/wall stiffness and shallow foundations. Other key features of the Third Edition: • Makes extensive reference to real case studies to illustrate the concepts described • Focuses on modern soil mechanics principles, informed by relevant research • Presents more than 60 worked examples • Provides learning objectives, key points, and self-assessment and learning questions for each chapter • Includes an accompanying solutions manual for lecturers This book serves as a resource for undergraduates in civil engineering and as a reference for practising geotechnical engineers.

Tropical Residual Soils Engineering

Author: B.B.K. Huat
Publisher: CRC Press
ISBN: 0203024621
Format: PDF, ePub, Docs
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Focused on tropical areas and their unique problems and issues, this work examines all aspects of residual soils engineering, including both theoretical and practical aspects. This book gives the practitioner a thorough understanding of the characteristics of these soil types, their formation and their material properties, while guidelines on application, stabilization and assessment, reveal how this knowledge can be used in the field. The authors have extensive expertise with this type of ground engineering, and include a case study to illustrate the technical aspects. Graduate students, researchers and professionals in soil and rock mechanics, and geotechnical engineers working in tropical regions will find this an invaluable resource.