Swcc And Clay Mineralogy Based Models For Realistic Simulation Of Swell Behavior Of Expansive Soils

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SWCC and Clay Mineralogy Based Models for Realistic Simulation of Swell Behavior of Expansive Soils

Author : Aravind Pedarla
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (858 download)

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Book Synopsis SWCC and Clay Mineralogy Based Models for Realistic Simulation of Swell Behavior of Expansive Soils by : Aravind Pedarla

Download or read book SWCC and Clay Mineralogy Based Models for Realistic Simulation of Swell Behavior of Expansive Soils written by Aravind Pedarla and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Predicting the volume change behavior of expansive soils has been a major challenge to the engineers in the past few years, due to the intricate coupling effects caused by different soil composition related mineralogy and pore void distribution to unsaturated soil property related parameters toward soil swelling. Hence, the main objective of this research is to develop models for realistic simulation of expansive soil behavior by accounting for inherent composition and unsaturated soil properties. In order to accomplish this research, eight natural expansive clays have been sampled from different active expansive soil regions across the United States. Basic soil classification and mineralogy studies were performed on these soils to identify the type of expansive clays and approximate mineralogy. The swell behavior of these clays is then studied by using different testing methods on soils compacted at different initial dry density conditions. A novel 3-D swell test apparatus was introduced to measure the volumetric strains of these soils under confining pressures. These test results are utilized for the development and validation of swell prediction models. Different soil composition parameters like clay mineralogy, soil-suction relationship and pore distribution are studied using advanced techniques. These techniques include the determination of clay mineralogy from chemical properties of soil, soil water relationship (i.e. soil water characteristic curve) from pressure plate and filter paper techniques and pore distribution studies from mercury intrusion porosimetry technique and X-ray computed tomography tests. Once the soil composition parameters are determined, analysis of test results was performed to identify the variation of composition parameters with soil type. Based on the soil composition test results three soil swell prediction models have been formulated in the current research. The first model was based on diffused double layer theory of clay minerals present in the soil. The second model termed as MHC model was based on two swell governing parameters which constitutes the effects of soil matric suction, void ratio change and clay mineralogy. The final model was based on the ratio of total surface area measured from clay mineralogy and mercury intrusion porosimetry. All the models showed reliable predictions of swell movements of soils that matched well with the measured test results.

欽定工部則例

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (489 download)

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Book Synopsis 欽定工部則例 by :

Download or read book 欽定工部則例 written by and published by . This book was released on 1749 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Indian Geotechnical Conference 2019

Author : Satyajit Patel
Publisher : Springer Nature
ISBN 13 : 9813365900
Total Pages : 159 pages
Book Rating : 4.8/5 (133 download)

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Book Synopsis Indian Geotechnical Conference 2019 by : Satyajit Patel

Download or read book Indian Geotechnical Conference 2019 written by Satyajit Patel and published by Springer Nature. This book was released on 2021-03-18 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises select proceedings of the annual conference of the Indian Geotechnical Society. The conference brings together research and case histories on various aspects of geotechnical and geoenvironmental engineering. The book presents papers on geotechnical applications and case histories, covering topics such as (i) Characterization of Geomaterials and Physical Modelling; (ii) Foundations and Deep Excavations; (iii) Soil Stabilization and Ground Improvement; (iv) Geoenvironmental Engineering and Waste Material Utilization; (v) Soil Dynamics and Earthquake Geotechnical Engineering; (vi) Earth Retaining Structures, Dams and Embankments; (vii) Slope Stability and Landslides; (viii) Transportation Geotechnics; (ix) Geosynthetics Applications; (x) Computational, Analytical and Numerical Modelling; (xi) Rock Engineering, Tunnelling and Underground Constructions; (xii) Forensic Geotechnical Engineering and Case Studies; and (xiii) Others Topics: Behaviour of Unsaturated Soils, Offshore and Marine Geotechnics, Remote Sensing and GIS, Field Investigations, Instrumentation and Monitoring, Retrofitting of Geotechnical Structures, Reliability in Geotechnical Engineering, Geotechnical Education, Codes and Standards, and other relevant topics. The contents of this book are of interest to researchers and practicing engineers alike.

Frontiers in Geotechnical Engineering

Author : Madhavi Latha G.
Publisher : Springer
ISBN 13 : 9811358710
Total Pages : 453 pages
Book Rating : 4.8/5 (113 download)

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Book Synopsis Frontiers in Geotechnical Engineering by : Madhavi Latha G.

Download or read book Frontiers in Geotechnical Engineering written by Madhavi Latha G. and published by Springer. This book was released on 2019-02-11 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains contributions by eminent researchers in the field of geotechnical engineering. The chapters of this book are based on the keynote and theme lectures delivered at the Indian Geotechnical Conference 2018, and discuss the recent issues and challenges, while providing perspective on the possible solutions and future directions. A strong emphasis is placed on proving connections between academic research and field practice, with many examples and case studies. Topics covered in this volume include contemporary infrastructural challenges, underground space utilization, sustainable construction, dealing with problematic soils and situations and geo-environmental issues including landfills. This book will be of interest to researchers, practitioners and students alike.

Engineering Geology

Author : Essa Lwisa
Publisher : BoD – Books on Demand
ISBN 13 : 1838818642
Total Pages : 136 pages
Book Rating : 4.8/5 (388 download)

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Book Synopsis Engineering Geology by : Essa Lwisa

Download or read book Engineering Geology written by Essa Lwisa and published by BoD – Books on Demand. This book was released on 2021-04-28 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on topics closely related to geological structures and hazards associated with rock constructions. It studies in detail geological masses, field tests, and ground improvement. Chapters discuss various geological investigations in the road, dam, and water reservoir construction.

Expansive Soils

Author : Amer Ali Al-Rawas
Publisher : Taylor & Francis
ISBN 13 : 1134154399
Total Pages : 540 pages
Book Rating : 4.1/5 (341 download)

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Book Synopsis Expansive Soils by : Amer Ali Al-Rawas

Download or read book Expansive Soils written by Amer Ali Al-Rawas and published by Taylor & Francis. 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

Numerical Modeling, Characterization and Monitoring of the Seasonal Behavior of Expansive Clays

Author : Ivo Rosa Montenegro
Publisher :
ISBN 13 :
Total Pages : 457 pages
Book Rating : 4.:/5 (123 download)

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Book Synopsis Numerical Modeling, Characterization and Monitoring of the Seasonal Behavior of Expansive Clays by : Ivo Rosa Montenegro

Download or read book Numerical Modeling, Characterization and Monitoring of the Seasonal Behavior of Expansive Clays written by Ivo Rosa Montenegro and published by . This book was released on 2020 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seasonal ground movements associated with the swelling and shrinking of expansive clays represent a major cause of damage to buildings, roads, and pipelines. The processes that give rise to these movements involve complex ground-atmosphere interactions (due to combined effects of infiltration and evaporation), combined with highly non-linear hydraulic and mechanical properties of partially saturated clay. This thesis presents an integrated study to measure and interpret long-term ground movements at a greenfield test site in Mustang Ridge (MR), Texas, adjacent to toll road SH130. The site is underlain by almost 12 m of high plasticity (montmorillonite-rich) clay. We designed and installed an autonomous field station that measures local weather conditions together with sub-surface water contents, using WCR reflectometers, and deformations, through a novel system of string-pot potentiometers. We have obtained online data from the site for more than 3 years and observed a seasonal range of 50 mm in ground surface movements. We have investigated the engineering properties of the MR clay using samples extracted during site investigation and lab tests on compacted specimens of blended/reconstituted clay. These data are then used to calibrate constitutive models of suction-water content (SWCC), hydraulic conductivity and 1D compressibility for the MR clay. Numerical analyses of non-linear coupled flow-deformation in the partially-saturated soil column has been carried using a customized finite difference and finite volume framework (MPME) implemented within MATLAB. The MPME framework enables the representation of specified atmospheric boundary conditions (either as specified fluid pressures or fluxes) and hence, can simulate periods dominated by rainfall-induced infiltration or net drying by evapotranspiration. Parametric MPME analyses are used to interpret field measurements at the test site to explain seasonal fluctuations in average strains and water contents and hence, to interpret the active depth in the MR clay. The results show that surface cracks influence the transient response of ground movements by significantly increasing the hydraulic conductivity of the medium. This feature affects the response rate of soil deformations to atmospheric phenomena. This behavior was simulated through the use of a constitutive model proposed by Stewart et al. (2016a) that quantifies the development of desiccation cracking. By improving our understanding of sources of seasonal ground movements, the research provides the basis for a more robust design of foundations and roadbeds in areas underlain by expansive clays.

Identification and Prediction of Swell of Expansive Earth Materials

Author : Raja Basu
Publisher :
ISBN 13 :
Total Pages : 348 pages
Book Rating : 4.:/5 (3 download)

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Book Synopsis Identification and Prediction of Swell of Expansive Earth Materials by : Raja Basu

Download or read book Identification and Prediction of Swell of Expansive Earth Materials written by Raja Basu and published by . This book was released on 1972 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Evaluation of the Rate of Secondary Swelling in Expansive Clays Using Centrifuge Technology

Author : Jasaswee Triyambak Das
Publisher :
ISBN 13 :
Total Pages : 288 pages
Book Rating : 4.:/5 (92 download)

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Book Synopsis Evaluation of the Rate of Secondary Swelling in Expansive Clays Using Centrifuge Technology by : Jasaswee Triyambak Das

Download or read book Evaluation of the Rate of Secondary Swelling in Expansive Clays Using Centrifuge Technology written by Jasaswee Triyambak Das and published by . This book was released on 2014 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Expansive soils are characterized as having high amount of clay minerals such as smectite, which lead to swelling during wet seasons by absorbing water and shrinking during dry seasons owing to moisture loss by evapotranspiration. The soil volumetric changes due to moisture fluctuations cause extensive damage to civil engineering structures, namely pavements, retaining walls, low rise buildings and canals founded on such soils. The primary swelling portion of the swell curve has been studied in significant details in previous studies. However, there is a dearth of literature concerning the secondary swelling phenomenon in expansive clays, which has also been observed in experimental studies. While it may be argued that the magnitude of secondary swelling is significantly less as compared to primary swelling, the characterization of the rate of secondary swelling is relevant for fully characterizing the swell potential of the soil. The rate of secondary swelling has been used to predict the long-term swelling of expansive soils. Conventional laboratory swell tests may take over a month for specimens to demonstrate secondary swelling behavior. A centrifuge based method has been recently developed at The University of Texas at Austin to achieve this objective in multiple specimens, and within less than a day. The effects of soil fabric, soil type, relative compaction, molding water content, gravitational gradient, and infiltrating fluid, on the rate of secondary swelling, are thoroughly investigated in this thesis. Four different expansive clays found widely in and around Texas, namely - Eagle Ford Clay, Tan Taylor Clay, Black Taylor Clay and Houston Black Clay, have been used in the study. Based on this extensive experimental evaluation, it may be concluded that secondary swelling behavior could be explained by flow processes associated with the bimodal pore size distribution in expansive clays. The rate of secondary swelling was found to increase with increasing molding water content and increasing compaction dry unit weight. The experimental results revealed that clays with a flocculated structure (compacted dry of optimum) demonstrate rapid primary swelling but exhibit less swelling in the secondary region, as compared to clays with a dispersed structure (compacted wet of optimum). The slope of secondary swelling showed a decline with increasing gravitational gradient. The rate of secondary swelling showed evidence of upward trend with an increase in the plasticity index and clay fraction of the soil. It was observed that soils which exhibit higher primary swelling also demonstrate higher secondary swelling.

Foundations on Expansive Soils

Author : Fu Hua Chen
Publisher : Elsevier
ISBN 13 : 044460166X
Total Pages : 301 pages
Book Rating : 4.4/5 (446 download)

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Book Synopsis Foundations on Expansive Soils by : Fu Hua Chen

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.

Advances in Computer Methods and Geomechanics

Author : Amit Prashant
Publisher : Springer Nature
ISBN 13 : 9811508860
Total Pages : 735 pages
Book Rating : 4.8/5 (115 download)

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Book Synopsis Advances in Computer Methods and Geomechanics by : Amit Prashant

Download or read book Advances in Computer Methods and Geomechanics written by Amit Prashant and published by Springer Nature. This book was released on 2020-01-14 with total page 735 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents selected papers from IACMAG Symposium,The major themes covered in this conference are Earthquake Engineering, Ground Improvement and Constitutive Modelling. This volume will be of interest to researchers and practitioners in geotechnical and geomechanical engineering.

Geotechnical Characterization and Modelling

Author : Madhavi Latha Gali
Publisher : Springer Nature
ISBN 13 : 9811560862
Total Pages : 1098 pages
Book Rating : 4.8/5 (115 download)

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Book Synopsis Geotechnical Characterization and Modelling by : Madhavi Latha Gali

Download or read book Geotechnical Characterization and Modelling written by Madhavi Latha Gali and published by Springer Nature. This book was released on 2020-09-18 with total page 1098 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume comprises select papers presented during the Indian Geotechnical Conference 2018, discussing issues and challenges relating to the characterization of geomaterials, modelling approaches, and geotechnical engineering education. With a combination of field studies, laboratory experiments and modelling approaches, the chapters in this volume address some of the most widely investigated geotechnical engineering topics. This volume will be of interest to researchers and practitioners alike.

Geo-frontiers 2011

Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (838 download)

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Book Synopsis Geo-frontiers 2011 by :

Download or read book Geo-frontiers 2011 written by and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advanced Unsaturated Soil Mechanics and Engineering

Author : Charles Wang Wai Ng
Publisher : CRC Press
ISBN 13 : 1482266121
Total Pages : 711 pages
Book Rating : 4.4/5 (822 download)

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Book Synopsis Advanced Unsaturated Soil Mechanics and Engineering by : Charles Wang Wai Ng

Download or read book Advanced Unsaturated Soil Mechanics and Engineering written by Charles Wang Wai Ng and published by CRC Press. This book was released on 2014-04-21 with total page 711 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 engineerin

Foundation Engineering for Expansive Soils

Author : John D. Nelson
Publisher : John Wiley & Sons
ISBN 13 : 1118415299
Total Pages : 416 pages
Book Rating : 4.1/5 (184 download)

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Book Synopsis Foundation Engineering for Expansive Soils by : John D. Nelson

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.

Unsaturated Soil Mechanics in Engineering Practice

Author : Delwyn G. Fredlund
Publisher : John Wiley & Sons
ISBN 13 : 1118280504
Total Pages : 946 pages
Book Rating : 4.1/5 (182 download)

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Book Synopsis Unsaturated Soil Mechanics in Engineering Practice by : Delwyn G. Fredlund

Download or read book Unsaturated Soil Mechanics in Engineering Practice written by Delwyn G. Fredlund and published by John Wiley & Sons. This book was released on 2012-07-30 with total page 946 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Irrigation and Drainage Engineering

Author : Peter Waller
Publisher : Springer
ISBN 13 : 3319056999
Total Pages : 747 pages
Book Rating : 4.3/5 (19 download)

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Book Synopsis Irrigation and Drainage Engineering by : Peter Waller

Download or read book Irrigation and Drainage Engineering written by Peter Waller and published by Springer. This book was released on 2015-11-18 with total page 747 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook focuses specifically on the combined topics of irrigation and drainage engineering. It emphasizes both basic concepts and practical applications of the latest technologies available. The design of irrigation, pumping, and drainage systems using Excel and Visual Basic for Applications programs are explained for both graduate and undergraduate students and practicing engineers. The book emphasizes environmental protection, economics, and engineering design processes. It includes detailed chapters on irrigation economics, soils, reference evapotranspiration, crop evapotranspiration, pipe flow, pumps, open-channel flow, groundwater, center pivots, turf and landscape, drip, orchards, wheel lines, hand lines, surfaces, greenhouse hydroponics, soil water movement, drainage systems design, drainage and wetlands contaminant fate and transport. It contains summaries, homework problems, and color photos. The book draws from the fields of fluid mechanics, soil physics, hydrology, soil chemistry, economics, and plant sciences to present a broad interdisciplinary view of the fundamental concepts in irrigation and drainage systems design.