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Author : Lawrence D. Johnson
Publisher :
ISBN 13 :
Total Pages : 112 pages
Book Rating : 4.04/5 ( download)
Download or read book Analysis of Behavior of Expansive Soil Foundations written by Lawrence D. Johnson and published by . This book was released on 1976 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lawrence D. Johnson
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.43/5 ( download)
Download or read book Analysis of Behavior of Expansive Soil Foundations written by Lawrence D. Johnson and published by . This book was released on 1976 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The differential heave of foundation soil from moisture imbibition often causes major damage to overlying structures. Many methods have been proposed for estimating expansive soil heave, but there are no proven guidelines for evaluating the behavior of foundations on swelling soils. Foundations built on expansive soils are often designed without considering the swelling properties of the soil, resulting in unsightly cracking or structural damage to the completed building. A practical method for evaluating the behavior of foundations on undisturbed expansive soil involves a site study, laboratory tests on typical samples, prediction of the total and differential heave of the foundation soil beneath various types of foundations, and choice of a suitable and economical foundation design. The site study will help define the relative vulnerability of the foundation soils to heave, indicate the soil strata that have the most likely potential for swell, and provide samples for laboratory tests. The type of foundation is usually controlled by the structural and architectural requirements and site and subsurface soil characteristics.
Author : Fu Hua Chen
Publisher : Elsevier
ISBN 13 : 044460166X
Total Pages : 301 pages
Book Rating : 4.67/5 ( download)
Download or read book Foundations on Expansive Soils written by Fu Hua Chen and published by Elsevier. This book was released on 2012-12-02 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foundations on Expansive Soils provides the practicing engineer with a summary of the state-of-the-art of expansive soils and practical solutions based on the author's experience. The book is organized into two parts. Part I deals with theory and practice, and summarizes some of the theoretical physical properties of expansive soils. It also discusses various techniques employed to found structures on expansive soils such as drilled pier foundation, mat foundation, moisture control, soil replacement, and chemical stabilization. Topics covered include the origin, mineralogical composition, and the basic structure of expansive soils; the migration of water, swelling potential, and swelling pressure; site investigations and laboratory testing; moisture control; and soil stabilization. Part II presents case studies on the following: distress caused by pier uplift; distress caused by the improper design and construction of a drilled pier foundation system; distress caused by heaving of footing pad and floor slab; distress caused by heaving of continuous footings; and distress caused by a rise of ground water.
Author : Amer Ali Al-Rawas
Publisher : CRC Press
ISBN 13 : 0203968077
Total Pages : 540 pages
Book Rating : 4.79/5 ( download)
Download or read book Expansive Soils written by Amer Ali Al-Rawas and published by CRC Press. This book was released on 2006-06-08 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Expansive Soils provides the reader with easy and specific access to problems associated with expansive soils, characterisitics and treatment, and evaluation and remediation. Set up with contributions from worlwide expert, this main reference guide is intended for engineers, researchers and senior students working on soil
Author : John D. Nelson
Publisher : John Wiley & Sons
ISBN 13 : 1118415299
Total Pages : 416 pages
Book Rating : 4.90/5 ( download)
Download or read book Foundation Engineering for Expansive Soils written by John D. Nelson and published by John Wiley & Sons. This book was released on 2015-02-10 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Your guide to the design and construction of foundations on expansive soils Foundation Engineering for Expansive Soils fills a significant gap in the current literature by presenting coverage of the design and construction of foundations for expansive soils. Written by an expert author team with nearly 70 years of combined industry experience, this important new work is the only modern guide to the subject, describing proven methods for identifying and analyzing expansive soils and developing foundation designs appropriate for specific locations. Expansive soils are found worldwide and are the leading cause of damage to structural roads. The primary problem that arises with regard to expansive soils is that deformations are significantly greater than in non-expansive soils and the size and direction of the deformations are difficult to predict. Now, Foundation Engineering for Expansive Soils gives engineers and contractors coverage of this subject from a design perspective, rather than a theoretical one. Plus, they'll have access to case studies covering the design and construction of foundations on expansive salts from both commercial and residential projects. Provides a succinct introduction to the basics of expansive soils and their threats Includes information on both shallow and deep foundation design Profiles soil remediation techniques, backed-up with numerous case studies Covers the most commonly used laboratory tests and site investigation techniques used for establishing the physical properties of expansive soils If you're a practicing civil engineer, geotechnical engineer or contractor, geologist, structural engineer, or an upper-level undergraduate or graduate student of one of these disciplines, Foundation Engineering for Expansive Soils is a must-have addition to your library of resources.
Author : Fu Hua Chen
Publisher : Elsevier Science & Technology
ISBN 13 :
Total Pages : 500 pages
Book Rating : 4.54/5 ( download)
Download or read book Foundations on Expansive Soils written by Fu Hua Chen and published by Elsevier Science & Technology. This book was released on 1988 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the first edition of Foundations on Expansive Soils appeared in 1975, considerable advancements have been made in this field. While most of the research has been concentrated in the area of heave prediction, identification of swelling soil and soil suction, studies on unsaturated soil, finite element analysis and stress modeling have also commanded a great deal of attention. More and more nations are becoming aware of the damage caused by expansive soils and it could be said that more than half the world is affected by swelling soils. As a consulting geotechnical engineer, the author has seen little advancement in the practical application of theoretical approaches towards solving engineering problems. Both geotechnical engineers and structural engineers adhere to the initial concept that by isolating water, the problem can be resolved. Unfortunately, more and more structural failure has been reported. This book provides the practicing engineer with a summary of the state-of-the art knowledge of expansive soils and practical solutions based upon the author's experience. Part I discusses theory and practice, and summarizes some of the theoretical physical properties of expansive soils. It also discusses various techniques employed to found structures on expansive soils such as drilled pier foundation, mat foundation, moisture control, soil replacement, and chemical stabilization. Part II presents six detailed case studies. A considerable amount of new material has been incorporated into each chapter of this revised edition, particularly on highway pavement and soil suction.
Author : John Nelson
Publisher : John Wiley & Sons
ISBN 13 : 0471181145
Total Pages : 294 pages
Book Rating : 4.49/5 ( download)
Download or read book Expansive Soils written by John Nelson and published by John Wiley & Sons. This book was released on 1997-02-13 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essential technical information for building on expansive soils--complete with practical, proven design methods. Expansive Soils examines factors that influence the design offoundations and pavements built on expansive soils, and exploreskey design procedures and remedial measures that address thesefactors effectively. Backed by the authors' extensive research andexperience --including interviews with practicing engineers workingwith expansive soils --this authoritative volume is an importantreference text for geotechnical and foundation engineers,geologists, construction professionals, and students. Easy to understand and apply, Expansive Soils contains: * Site investigation techniques for identification andclassification of expansive soils * Heave prediction methods using different types of data --withrigorous treatment of soil suction theory and measurement,oedometer tests, and more * Alternative design procedures for drilled pier and slab-on-gradefoundations, highway and airfield pavements * Treatment and chemical stabilization techniques --including salttreatment; moisture barriers; lime and cement stabilization; andother procedures * Remedial measures such as drainage control, and removal withreplacement and compaction control * Sample problems illustrating practical applications.
Author : R.K. Katti
Publisher : CRC Press
ISBN 13 : 9789058092571
Total Pages : 1270 pages
Book Rating : 4.77/5 ( download)
Download or read book Behaviour of Saturated Expansive Soil and Control Methods written by R.K. Katti and published by CRC Press. This book was released on 2002-01-01 with total page 1270 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text is a compendium of five decades of work relating to science, mechanics and improvement of highly expansive soil systems, application of improved methods to construction of stable civil engineering structures on such deposits. He has used a particulate approach incorporating thermodynamic properties of soil particles as matter to predict the behaviour of saturated expansive soil. The compiling of this massive work has been the effort of the co-authors. The behaviour of expansive soil deposits is found to be unconventional in nature. Prof. Katti has focused on the difference in behaviour by conducting identical studies on conventional soil systems. The book covers topics on basic property, swelling and swelling pressure measurements, shear strength behaviour under various conditions including depth effect, lateral earth pressure development under Ka, Ko and Kp conditions using large-scale devises, discovery of CNS technology and its field application, bearing capacity aspect with and without CNS and MSM, expansive soil improvement techniques, approach to design of rigid and flexible pavements, shallow and raft foundations; optimum length, Hd of underreamed piles, similarity between suction pressure measure approach and cohesion measure approach, use of conventional and small scale test data and simplified approach to estimate he and h, standards, and mechanics of expansive soil media and case histories. He has brought about limitations of existing conventional theories to deal with expansive soil behaviour and the need for incorporating thermodynamic parameters to predict behaviour of saturated expansive soils. This is a unique treatise covering the entire realm of behaviour of saturated expansive soil and control methods. It can act as a database for future research workers and scholars as a guide for construction for practicing engineers and as a sequentially organised scientifically based book for students.
Author : Laureano R. Hoyos
Publisher : Springer
ISBN 13 : 3319619314
Total Pages : 231 pages
Book Rating : 4.16/5 ( download)
Download or read book Advances in Characterization and Analysis of Expansive Soils and Rocks written by Laureano R. Hoyos and published by Springer. This book was released on 2017-07-11 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes a collection of technical papers covering two important research topics in geotechnical engineering: (1) the behavior and treatment of expansive soils, and (2) the characterization of rock properties. The twelve studies on expansive soils include investigations into novel stabilization techniques for expansive soils using different admixtures or mechanical consolidation techniques, as well as new experimental approaches to evaluate the behavior of expansive soils. They also include an evaluation of wetting boundary conditions on the volume change of expansive soils, as well as the role of hydrologic boundary conditions in arid climates. The four studies on rock properties include thermo-hydro-mechanical behavior of gypsum rock, role of rock strength in blastability, indirect methods to estimate rock strength, and variations in isotope distributions in Permian rocks. The two broad themes in this collection, as summarized above, are representative of local challenges facing geotechnical engineers in the Middle East, but their contributions can also be extended to other regions of the world. This volume is part of the proceedings of the 1st GeoMEast International Congress and Exhibition on Sustainable Civil Infrastructures, Egypt 2017.
Author : Xingyi Wu
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.86/5 ( download)
Download or read book Three-Dimensional Finite Element Analysis of the Pile Foundation Behavior in Unsaturated Expansive Soil written by Xingyi Wu and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Expansive soils, which are widely referred to as problematic soils are extensively found in many countries of the world, especially in semi-arid and arid regions. Several billions of dollars are spent annually for maintenance or for repairs to the structures constructed with and within expansive soils. The major problems of expansive soils can be attributed to the volume changes associated with the alternate wetting and drying conditions due to the influence of environmental factors. Pile foundations have been widely accepted by practicing engineers as a reasonably good solution to reduce the damages to the structures constructed on expansive soils. Typically, piles foundations are extended through the active layer of expansive soil to reach the bedrock or placed on a soil-bearing stratum of good quality. Such a design and construction approach typically facilitates pile foundations to safely carry the loads from the superstructures and reduce the settlement. However, in many scenarios, damages associated with the pile foundations are due to the expansion of the soil that is predominantly in the active zone that contributes to the pile uplift. Such a behavior can be attributed to the water infiltration into the expansive soil, which is a key factor that is associated with the soil swelling. Due to this phenomenon, expansive soil typically moves upward with respect to the pile. This generates extra positive friction on the pile because of the relative deformation. If the superstructure is light or the applied normal stress on the head of the piles is not significant, it is likely that there will be an uplift of the pile contributing to the damage of the superstructure. In conventional engineering practice, the traditional design methods that include the rigid pile method and the elastic pile method are the most acceptable in pile foundation design. These methods are typically based on a computational technique that uses simplified assumptions with respect to soil and water content profile and the stiffness and shear strength properties. In other words, the traditional design method has limitations, as they do not take account of the complex hydromechanical behavior of the in-situ expansive soils. With the recent developments, it is possible to alleviate these limitations by using numerical modeling techniques such as finite element methods. In this thesis, a three-dimensional finite element method was used to study the hydro-mechanical behavior of a single pile in expansive soils during the infiltration process. In this thesis, a coupled hydro-mechanical model for the unsaturated expansive soil is implemented into Abaqus software for analysis of the behavior of single piles in expansive soils during water infiltration. A rigorous continuum mechanics based approach in terms of two independent stress state variables; namely, net normal stress and suction are used to form two three-dimensional constitutive surfaces for describing the changes in the void ratio and water content of unsaturated expansive soils. The elasticity parameters for soil structure and water content in unsaturated soil were obtained by differentiating the mathematical equations of constitutive surfaces. The seepage and stress-deformation of expansive soil are described by the coupled hydro-mechanical model and the Darcy's law. To develop the subroutines, the coupled hydro-mechanical model is transferred into the coupled thermal-mechanical model. Five user-material subroutines are used in this program. The user-defined field subroutine (USDFILD) in Abaqus is used to change and transfer parameters. Three subroutines including user-defined material subroutine (UMAT), user-defined thermal material subroutine (UMATHT), and user-defined thermal expansion subroutine (UEXPAN) are developed and used to calculate the stress-deformation, the hydraulic behavior, and the expansion strain, respectively. Except for the coupled hydro-mechanical model of unsaturated expansive soils, a soil-structure interface model is implemented into the user-defined friction behavior subroutine (FRIC) to calculate the friction between soil and pile. The program is verified by using an experimental study on a single pile in Regina clay. The results show that for the single pile in expansive soil under a vertical load, water infiltration can cause a reduction in the pile shaft friction. More pile head load is transferred to the pile at greater depth, which increases the pile head settlement and pile base resistance. In future, the proposed method can also be extended for verification of other case studies from the literature. In addition, complex scenarios can be investigated to understand the behavior of piles in expansive soils.
