Articles by "Unsaturated"

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Showing posts with label Unsaturated. Show all posts

July 23, 2018 , ,
Ning Lu, William J. Likos ...  584 pages - Publisher: Wiley; 1st edition (May, 2004) ...Language: English - ISBN-10: 0471447315 - ISBN-13: 978-0471447313 ...

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. A thorough and unique introduction to the fundamental principles of unsaturated soil mechanics: Through a principles-based approach, Unsaturated Soil Mechanics provides a thorough grounding in unsaturated soil mechanics principles and phenomena from three fundamental perspectives: thermodynamics, mechanics, and hydrology. In a progressive and interrelated format with logic, physical reasoning, and mathematical rigor, Unsaturated Soil Mechanics examines the fundamental principles of unsaturated soil mechanics, illustrates the application of these principles to stress and flow phenomena in unsaturated soil, and demonstrates and evaluates the measurement and modeling techniques commonly used to quantify the state and material variables required to describe these stress and flow phenomena. Unsaturated Soil Mechanics offers one focused volume uniting the microscopic physical basis and the macroscopic thermodynamic framework for pore water retention and the state of stress in unsaturated soil. Complete with extensive sample problems, this accessible text brings together the rapid advances in research in unsaturated soil mechanics, including advances in the applicability of effective stress, liquid and gas flows, and suction and hydraulic conductivity measurement. Unsaturated Soil Mechanics is an invaluable introduction to this emerging field for students in civil engineering, environmental engineering, soil science, groundwater hydrology, and geoscience, as well as an inclusive reference for professional geotechnical engineers, soil scientists, geologists, and structural engineers.

July 02, 2018 , ,
E. J. Murray, V. Sivakumar ... 304 pages - Publisher: Wiley-Blackwell; 1st edition (August, 2010) ... Language: English - ISBN-10: 1444332120 - ISBN-13: 978-1444332124 ...

An understanding of the mechanical properties of unsaturated soils is crucial for geotechnical engineers worldwide, as well as to those concerned with the interaction of structures with the ground. This book deals principally with fine-grained clays and silts, or soils containing coarser sand and gravel particles but with a significant percentage of fines. The study of unsaturated soil is a practical subject, linking fundamental science to nature. Soils in general are inherently variable and their behaviour is not easy to analyse or predict, and unsaturated soils raise the complexity to a higher level. Even amongst practicing engineers, there is often lack of awareness of the intricacies of the subject. This book offers a perspective of unsaturated soils based on recent research and demonstrates how this dovetails with the general discipline of soil mechanics. Following an introduction to the basic soil variables, the phases, the phase interactions and the relevance of soil structure, an up-to-date review of laboratory testing techniques is presented. This includes suction measurement and control techniques in triaxial cell testing. This is followed by an introduction to stress state variables, critical state and theoretical models in unsaturated soils. A detailed description of the thermodynamic principles as applied to multi-phase materials under equilibrium conditions follows. These principles are then used to explore and develop a fundamental theoretical basis for analysing unsaturated soils. Soil structure is broken down into its component parts to develop equations describing the dual stress regime. The critical state strength and compression characteristics of unsaturated soils are examined and it is shown how the behaviour may be viewed as a three-dimensional model in dimensionless stress-volume space. The analysis is then extended to the work input into unsaturated soils and the development of conjugate stress, volumetric and strain-increment variables. These are used to examine the micromechanical behaviour of kaolin specimens subjected to triaxial shear strength tests and lead to observations not detectable by other means. Unsaturated Soils: A fundamental interpretation of soil behaviour covers a rapidly advancing area of study, research and engineering practice and offers a deeper appreciation of the key characteristics of unsaturated soil. It provides students and researchers with a framework for understanding soil behaviour and demonstrates how to interpret experimental strength and compression data.* provides engineers with a deeper appreciation of key characteristics of unsaturated soils * covers a rapidly advancing area of study, research and engineering practice * provides students and researchers a framework for understanding soil behaviour * shows how to interpret experimental data on strength and compression * the limited number of books on the subject are all out of date.

February 01, 2018 , ,
Nasser Khalili, Adrian Russell ... 1872 pages - Publisher: CRC Press; (June, 2014) ... Language: English - ISBN-10: 1138001503 - ISBN-13: 978-1138001503 ...

Unsaturated Soils: Research and Applications contains 247 papers presented at 6th International Conference on Unsaturated Soils (UNSAT2014, Sydney, Australia, 2-4 July 2014). The two volumes provide an overview of recent experimental and theoretical advances in a wide variety of topics related to unsaturated soil mechanics: Unsaturated Soil Behavior * Experimentation * Modelling * Case Histories * Geotechnical Engineering Problems * Multidisciplinary and New Areas. Unsaturated Soils: Research and Applications presents a wealth of information, and is of interest to researchers and practising engineers in soil mechanics and geotechnical engineering.

January 23, 2017 , ,
Bernardo Caicedo, Carol Murillo ... 610 pages - Publisher: CRC Press; (January, 2013) ...
Language: English - ASIN: B00CLZIFKO by Amazon Digital Services ...

New theories and testing techniques related with Unsaturated Soil Mechanics have proven to be valuable tools to study a broad spectrum of geo-materials which includes rocks, rock fills, frozen soils and domiciliary solid wastes. These new theories and testing techniques have permitted the analysis of several traditional problems from a new perspective (e.g., swelling or collapsible soils and compacted soils or pavements materials), and they have also shown their efficiency to study new energy-related problems like CO2 sequestration and nuclear waste disposal.

Advances in Unsaturated Soils is a collection of papers from the 1st Pan-American Conference on Unsaturated Soils organized in Cartagena de Indias, Colombia, in February 2013. The volume includes 76 research papers coming for all over the world, as well as 7 keynotes papers by well known international researchers. The contributions present a variety of topics including: Advances in testing techniques * Unsaturated soil behavior * Constitutive modeling and microstructure * Numerical modeling * Geotechnical problems. Advances in Unsaturated Soils is expected to become a useful reference to academics and professionals involved in Unsaturated Soil Mechanics.

October 27, 2016 , ,
Tom Schanz ... 248 pages - Publisher: Springer;  (February, 2007) ...
Language: English - ISBN-10: 3540698752 - ISBN-13: 978-3540698753 ...

These proceedings are a continuation of the series of International Conferences in Germany entitled "Mechanics of Unsaturated Soils." The primary objective is to discuss and understand unsaturated soil behaviour such that engineered activities are made better with times in terms of judgment and quality. The proceedings contain recent research by leading experts in Mechanics of Unsaturated Soils.

October 23, 2016 , ,
Zhenghan Chen, Changfu Wei, De´an Sun, Xongfu Xu ... 924 pages - Publisher: CRC Press; (November, 2015) ... Language: English - ASIN: B017U3EWMQ by Amazon Digital Services ... 

In the past decades advances have been made in the research and practice on unsaturated soil mechanics. In 2000 the first Asia-Pacific Conferences on Unsaturated Soils was organized in Singapore. Since then, four conferences have been held under the continued support of the Technical Committee on Unsaturated Soils (TC106) of the International Society of Soil Mechanics and Geotechnical Engineering (ISSMGE). The conferences provided an excellent forum for researchers and practitioners in the region and beyond to present the latest developments and to exchange ideas on the subjects related to unsaturated soils. Unsaturated Soil Mechanics - from Theory to Practice collects more than 140 technical papers, and 10 invited and keynote lectures presented at the sixth Asia-Pacific Conference on Unsaturated Soils (Guilin, China, 23-26 October 2015). The first Asia-Pacific distinguished lecture, launched at the conference, is also included. The contributions address the fundamental behavior of unsaturated soils, and present theoretical and numerical modeling and engineering applications. The topics of concern span the full spectrum from theory to practice, with strong relevance to the problems in the region and beyond such as collapse/swelling, freezing/thawing, desiccation shrinkage, rainfall-induced slope failure, contaminant transport, shale gas extraction and so on, largely representing the latest developments in unsaturated soil mechanics.

Geoffrey E. Blight ... 640 pages - Publisher: CRC Press; (July, 2013) ...  
Language: English - ISBN-10: 0415621186 - ISBN-13: 978-0415621182 ...

There are other books on unsaturated soil mechanics, but this book is different. Unsaturated soil mechanics is only one aspect of a continuous range of soil mechanics studies that extends from the rheology of high water content soil slurries to the mechanics of soft soils, to stiff saturated soils, to unsaturated soils, and, at the far end of the range, to dry soils. In reality, the water content of all soils, that are not permanently submerged, varies seasonally. In most climatic zones, rainfall varies during the year and the depth of the water table varies sympathetically. In applying unsaturated soil mechanics in practice, it is therefore important to realise and allow for the probability that soil will, either seasonally or occasionally, pass from the unsaturated to the saturated state and even from unsaturation to dryness. This is the only book that looks specifically at this essential practical aspect. The theory of unsaturated soils is fully dealt with in all of its aspects, including its application to natural undisturbed soils and compacted soils. Application of the theory to soil-like materials such as mine waste and municipal solid waste is also covered. Application of the theory to practice is illustrated by a number of detailed case histories. Unsaturated soil mechanics principles can also successfully and usefully be applied in related fields such as the bulk storage of particulate materials, underground mine support, solution mining and concrete structures. Several case histories are given that illustrate these practical applications.

October 21, 2016 , ,
D. G. Fredlund, H. Rahardjo ... 544 pages - Publisher: Wiley-Interscience; 1st edition (August, 1993) ...
Language: English - ISBN-10: 047185008X - ISBN-13: 978-0471850083 ...

The principles and concepts for unsaturated soils are developed as extensions of saturated soils. Addresses problems where soils have a matric suction or where pore-water pressure is negative. Covers theory, measurement and use of the fundamental properties of unsaturated soils--permeability, shear strength and volume change. Includes a significant amount of case studies.

Laureano R. Hoyos, Xiong Zhang, Anand J. Puppala ... 
234 pages - Publisher: American Society of Civil Engineers; (June, 2010) ...
Language: English - ISBN-10: 0784411034 - ISBN-13: 978-0784411032 ...

Geotechnical and civil engineers all over the world continue to face problems with a wide range of geosystems involving materials that remain under partially saturated conditions throughout the year. The lack of education and training among engineering graduates and practitioners to properly deal with unsaturated soil conditions has resulted in faulty or excessively conservative designs, frequent construction delays, and deficient long-term performance of built infrastructure. Over the last few decades, however, the discipline of unsaturated soil mechanics has begun to receive increasing attention worldwide, providing better explanations for soil behavioral patterns than conventional saturated soil mechanics. Experimental and Applied Modeling of Unsaturated Soils contains 28 papers examining the most current thinking and practices involving unsaturated soils. This Geotechnical Special Publication is divided into two broad categories, General Characterization and Constitutive Behavior and Applied Modeling and Analysis. The papers in this publication were presented during the GeoShanghai 2010 International Conference held in Shanghai, China, June 3-5, 2010.

July 02, 2016 , , ,
Alessandro Tarantino, Enrique Romero ... 
214 pages - Publisher: Springer Netherlands; 1st edition (December, 2008) ...
Language: English - ASIN: B002EEO6L4 by Amazon Digital Services ...

This collection focuses on recent advances in laboratory and field testing of unsaturated soils. Leading researchers from fourteen countries to represent global research in the area of experimental unsaturated soil mechanics have been invited to contribute to this book. Twelve reports are presented dealing with measurement and control of suction and water content, mechanical, hydraulic, and geo-environmental testing, microstructure investigation, and applications of unsaturated soil monitoring to engineering behaviour of geo-structures. The main motivation behind this book is the rapid growth of experimental unsaturated soil mechanics over the last couple of decades. Several innovative laboratory and field techniques have been introduced in mechanical, hydraulic, and geo-environmental testing. However, this information is widely dispersed in journals and conference proceedings and researchers and engineers beginning to work in the field of unsaturated soil mechanics may find it difficult to identify suitable equipment and instrumentation for research or professional purposes. Audience: This volume aims at providing scientists and practitioners with a comprehensive overview of experimental unsaturated soil mechanics.

October 07, 2015 , ,
D. G. Fredlund, H. Rahardjo, M. D. Fredlund ... 
944 pages - Publisher: Wiley-Interscience; 1st edition (July, 2012) ... 
Language: English - ISBN-10: 1118133595 - ISBN-13: 978-1118133590 ...

The definitive guide to unsaturated soil from the world's experts on the subject: This book builds upon and substantially updates Fredlund and Rahardjo's publication, Soil Mechanics for Unsaturated Soils, the current standard in the field of unsaturated soils. It provides readers with more thorough coverage of the state of the art of unsaturated soil behavior and better reflects the manner in which practical unsaturated soil engineering problems are solved. Retaining the fundamental physics of unsaturated soil behavior presented in the earlier book, this new publication places greater emphasis on the importance of the "soil-water characteristic curve" in solving practical engineering problems, as well as the quantification of thermal and moisture boundary conditions based on the 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 Limit Equilibrium * 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 is essential reading for geotechnical engineers, civil engineers, and undergraduate- and graduate-level civil engineering students with a focus on soil mechanics.

August 30, 2015 , ,
Claudio Mancuso, Cristina Jommi, Francesca D'Onza ... 
460 pages - Publisher: Springer; 2012 edition (June, 2012) ... 
Language: English - ISBN-10: 3642313426 - ISBN-13: 978-3642313424 ...

These volumes contain the contributions to the Second European Conference on Unsaturated Soils, E-UNSAT 2012, held in Napoli, Italy, in June 2012. The event is the second of a series of European conferences, and follows the first successful one, organised in Durham, UK, in 2008. The conference series is supported by Technical Committee 106 of the International Society of Soil Mechanics and Geotechnical Engineering on Unsaturated Soils. The published contributions were selected after a careful peer-review process. A collection of more than one hundred papers is included, addressing the three thematic areas experimental, including advances in testing techniques and soil behaviour, modelling, covering theoretical and constitutive issues together with numerical and physical modelling, and engineering, focusing on approaches, case histories and geo-environmental themes. The areas of application of the papers embrace most of the geotechnical problems related to unsaturated soils. Increasing interest in geo-environmental problems, including chemical coupling, marks new perspectives in unsaturated soil mechanics. This book will provide a valuable up-to-date reference across the subject for both researchers and practitioners.

August 30, 2015 , ,
Claudio Mancuso, Cristina Jommi, Francesca D'Onza ... 
432 pages - Publisher: Springer; 2012 edition (July, 2014) ...
Language: English - ISBN-10: 3642439004 - ISBN-13: 978-3642439001 ...

These volumes contain the contributions to the Second European Conference on Unsaturated Soils, E-UNSAT 2012, held in Napoli, Italy, in June 2012. The event is the second of a series of European conferences, and follows the first successful one, organised in Durham, UK, in 2008. The conference series is supported by Technical Committee 106 of the International Society of Soil Mechanics and Geotechnical Engineering on Unsaturated Soils. The published contributions were selected after a careful peer-review process. A collection of more than one hundred papers is included, addressing the three thematic areas experimental, including advances in testing techniques and soil behaviour, modelling, covering theoretical and constitutive issues together with numerical and physical modelling, and engineering, focusing on approaches, case histories and geo-environmental themes. The areas of application of the papers embrace most of the geotechnical problems related to unsaturated soils. Increasing interest in geo-environmental problems, including chemical coupling, marks new perspectives in unsaturated soil mechanics. This book will provide a valuable up-to-date reference across the subject for both researchers and practitioners.

August 30, 2015 , ,
Charles W. W. Ng, Bruce Menzies ... 712 pages - Publisher: CRC Press; 1st edition (December, 2007) ... Language: English - ISBN-10: 0415436796 - ISBN-13: 978-0415436793 ...

Analytical and comprehensive, this state-of-the-art book, examines the mechanics and engineering of unsaturated soils, as well as explaining the laboratory and field testing and research that are the logical basis of this modern approach to safe construction in these hazardous geomaterials; putting them into a logical framework for civil engineering and design. The book: illustrates the importance of state-dependent soil-water characteristic curves * highlights modern soil testing of unsaturated soil behaviour, including accurate measurement of total volume changes and the measurement of anisotropic soil stiffness at very small strains * introduces an advanced state-dependent elasto-plastic constitutive model for both saturated and unsaturated soil * demonstrates the power of numerical analysis which is at the heart of modern soil mechanics * studies and simulates the behaviour of loose fills from unsaturated to saturated states; explains the difference between strain-softening and static liquefaction, and describes real applications in unsaturated soil slope engineering * includes purpose-designed field trials to capture the effects of two independent stress variables, and reports comprehensive measurements of soil suction, water contents, stress changes and ground deformations in both bare and grassed slopes * introduces a new conjunctive surface and subsurface transient flow model for realistically analysing rainfall infiltration in unsaturated soil slopes, and illustrates the importance of the flow model in slope engineering. Including constitutive and numerical modelling, this volume will interest students and professionals studying or working in the areas of geotechnical engineering and the built environment.

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