Download or read book Anisotropy and Stress Path Effects in Clays written by Nagaratnam Sivakugan and published by . This book was released on 1987 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Anisotropy and Stress Path Effects in Clays with Applications to the Pressuremeter Test written by PURDUE UNIV LAFAYETTE IN SCHOOL OF CIVIL ENGINEERING. and published by . This book was released on 1988 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research study undertaken at Purdue focuses towards increasing our understanding of fundamental issues related to the behavior of clays, especially with regard to modelling their anisotropy. The information being developed is applicable to most geotechnical problems, however, in illustrating their usefulness, emphasis is placed on interpretation of in situ tests, and in particular pressuremeter and self-boring pressuremeter (SBPM) tests. There is ample evidence that in situ soils are anisotropic, elasto-plastic, stress path and rate dependent, unlike what is generally assumed in test interpretations. Therefore, the study of mechanisms of deformation of in situ tests and their interpretation must take into account these features, and especially the anisotropic nature of the soil deposit. A simple and reliable anisotropic theory will be most useful in the study of several important factors related to pressuremeter testing such as possibility of radial cracking, role of vertical stress, stress conditions at failure, and the effects of initial disturbance which cannot be measured. It will also be possible to estimate undrained strength of the clay in other modes of failure using SBPM data only. (kr).

Download or read book Effect of Stress Anisotropy on Stiffness of Clays Using Bender Elements written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Studying and determination of shear wave velocity and shear modulus of clay has a considerable importance in geotechnical engineering. By concerning the real field situation, the initial shear modulus of soil is an important parameter for a variety geotechnical design applications, especially in small strain dynamics. Several methods and techniques are exists. The technique which is based on propagation of shear wave through soil sample was adopted in this study to measure shear modulus. The shear modulus was measured using a pair of bender elements installed at the top cap and pedestal of the triaxial cell. This research aims are to study variation of shear modulus and shear wave velocity with different stress consolidation (isotropic and anisotropic). The isotropic and anisotropic consolidation was conducted step by step so the variation of shear modulus can be determined. To examine the influence of deviator stress on shear modulus, a number of tests of consolidated undrained triaxial compression tests were performed both in anisotropic and isotropic conditions. There is a unique relationship between shear modulus and mean effective stress for both isotropic and anisotropic consolidated samples. It was found that no discernible effect of anisotropy of stress on the values of shear modulus even at high mean effective stress. The undrained shearing was carried out at the strain rate of 0.02 mm/min, during this steps, the elastic shear modulus was continuously recorded. The shear modulus obtained during undrained triaxial shearing exhibit similar dependency on the mean effective stress. The path of shear modulus during undrained shearing, both from isotropically and anisotropically consolidated samples generally followed the path obtained during consolidations. It implied the negligible effect of the deviator stress on shear modulus. An empirical equation was then proposed to express the shear modulus against mean effective stress for Bangkok clay.

Download or read book The Effect of Anisotropy and Reorientation of Principal Stresses on the Shear Strength of Saturated Clay written by James Michael Duncan and published by . This book was released on 1965 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Stress Strain Behavior Measurement Modeling and Analysis written by Hoe I. Ling and published by Springer Science & Business Media. This book was released on 2007-11-28 with total page 989 pages. Available in PDF, EPUB and Kindle. Book excerpt: The material in this work is focused on recent developments in research into the stress-strain behavior of geomaterials, with an emphasis on laboratory measurements, soil constitutive modeling and behavior of soil structures (such as reinforced soils, piles and slopes). The latest advancements in the field, such as the rate effect and dynamic behavior of both clay and sand, behavior of modified soils and soil mixtures, and soil liquefaction are addressed.

Download or read book The Effect of Anisotropy and Reorientation of Principal Stresses on the Shear Strength of Saturated Clay written by James Michael Duncan and published by . This book was released on 1965 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of the investigation are to establish the fundamental nature of the anisotropy of saturated clays with respect to undrained strength, and to evaluate the practical significance of anisotropy and reorientation of the principal stresses in short-term stability problems. (Author).

Download or read book Research in Earth Physics written by Charles Cushing Ladd and published by . This book was released on 1965 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence of stress path and anisotropy on the behaviour of a soft alluvial clay written by Laurence Daniel Wesley and published by . This book was released on 1975 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Anisotropic Versus Isotropic Consolidation in Consolidated undrained Triaxial Compression Tests of Cohesive Soils written by Frank C. Townsend and published by . This book was released on 1975 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of a series of consolidated-undrained (CU) triaxial compression tests performed on normally consolidated and overconsolidated specimes of two clays consolidated both isotropically (ICU tests) and anisotropically (ACU tests) are presented and analyzed in this report. The specimens were trimmed from samples of Vicksburg Buckshot clay (LL = 57) and a clay from the East Atchafalaya Basin Protection Levee (EABPL) project area (LL = 79), both of which had been consolidated from a slurry in large-diameter consolidometers under a maximum vertical consolidation pressure of 3.0 kg/sq cm. Data presented include stress-strain curves, pore pressure observations, final water content distributions within the specimens, and shear strength envelopes based on total and effective stresses. Test results indicate that the change in volume during consolidation and the water content at the end of consolidation are not a unique function of the vertical consolidation stresses but are related to the mean effective consolidation stress. Total stress envelopes based on Taylor's method of deriving strengths of anisotropically consolidated specimens from test results obtained from isotropically consolidated specimens slightly underestimate observed values. In this context, Taylor's method is an appropriate means of predicting strengths for various K sub c ratios from conventional ICU tests. Use of hyperbolic stress-strain relationships derived from ICU tests in finite element codes for ACU conditions will lead to erroneous results. Further testing of anisotropically consolidated soils under stress systems that better simulate in situ conditions is needed.

Download or read book Application of Stress strain Theory to Stress path Dependency and Anisotropy of Normally Consolidated Clay written by Franc̜ois Depardon and published by . This book was released on 1978 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Anisotropy and Stress Reorientation in Clay written by James Moyer Duncan and published by . This book was released on 1967 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contemporary Verse Anthology written by and published by . This book was released on 1916 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Numerical Models in Geomechanics written by G.N. Pande and published by CRC Press. This book was released on 2020-12-17 with total page 691 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this volume a number of developments on a variety of topics have been reported. These topics include: partially saturated soil; instabilities in soil behaviour; environmental geomechanics; parallel computing; and applications to tunnels, embankments, slopes, foundations and anchors.

Download or read book Mohr Circles Stress Paths and Geotechnics written by Richard H.G. Parry and published by CRC Press. This book was released on 2004-08-02 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of this well established book has been comprehensively updated in line with recent developments. After presenting the fundamentals of stress and strain, and their graphical representation, the book includes chapters on failure states in soils and rocks, observed and elastic paths, and the use of discontinuities. New sections incl

Download or read book The Effect of Anisotropy and Reorientation of Principal Stresses on the Shear Strength of Saturated Clay written by James M. Duncan and published by . This book was released on 1967 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recent Research on Environmental Earth Sciences Geomorphology Soil Science Paleoclimate and Karst written by Attila Çiner and published by Springer Nature. This book was released on 2023-12-16 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited book is based on the accepted papers for presentation at the 1st MedGU Annual Meeting, Istanbul, 2021. With two parts spanning a large spectrum of environmental, geomorphological and geoarcheological topics and a third part on caves and karst, which includes research studies gathered on the occasion of the International Year of Caves and Karst (2021), this book presents a series of newest research studies that are nowadays relevant to Middle East, Mediterranean region, and Africa. The book gives a general overview on current research, focusing on geoenvironmental issues and challenges in environmental management in the Middle East and Mediterranean region and surrounding areas. It offers a broad range of recent studies that discuss the latest advances in geomorphology, landslides, soil science, paleoclimate, and geoarcheology. It also shares insights on cave and karst studies including speleology, cave and karst explorations, geomorphology, hydrogeology, geoethics, prehistoric eras in karst, geotectonics, and the nexus between human activities and karst sustainability.