Download or read book Load Deformation Behavior of a Compacted Silty Clay Under Different Forms of Loading written by Bassam Afif Zeid and published by . This book was released on 1988 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study is to investigate the load - deformation behavior of a compacted silty clay using different forms of loading. Specifically, the potential existence of an axial strain at failure at which failure occurs irrespective of the previous deviator stress history was investigated. Results indicated that such a strain value did exist and was a function of compaction variables (dry density, and compaction moisture content), and applied confining pressure, The axial strain at failure remained essentially unchanged under creep loading, triaxinl loadƠing at different strain rate application, triaxial loadƠing after long term sustained application of confining pressure, triaxial loading after cyclic deviator stress application and repeated loading. However, the strength seemed to be dependent on stress history and curing age of the compacted clay (thixotropic effects). A proposed hypothesis was used to explain the influence of stress history and thixotropy on strength. Improved creep and repeated load models were also developed to predict load - time - deformation behavior for a wide range of stress applications and duration. Comparisons between theoratical predictions an experimental data agreed well. The failure strain phenomenon was incorporated in these models to develop relations between applied stresses and time to failure.
Download or read book Behaviour of a Compacted Silty Clay Under Triaxial and Creep Testing Conditions written by Stephan K. Saboundjian and published by . This book was released on 1989 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this research is to investigate the load-deformatinn behavior of compacted silty clay when subjected to different forms of loading. Triaxial and creep tests were conducted on specimens compacted at different water contents (dry and wet of optimum - Modified AASHTO compaction). In the case of triaxial tests, a wide range of confining pressures was used and the influence of strain rate, confinement and thixotropy was studied. Constant-load creep tests were conducted on specimens cured for two weeks then subjected to a wide range of confining pressures and stress levels. Results indicate that although the strength of the compacted soil is influenced by strain rate and thixotropy, the failure strain remains essentially unchanged. Similar observations were made in the case of creep tests whereby the failure strain was a function of given compaction (water content) and testing (confining pressure) conditions, independent of stress history. A generalized creep model was proposed to predict load-time-deformation behavior for a wide range of stress levels (both low and high) and confining pressures. Parameters were determined for each case for the prediction of the axial strain variation with time using the generalized creep model. Finally, the failure strain phenomenon was incor¬porated in this model to develop relations between applied stress levels and time to failure.
Download or read book Clay Strength Under Earthquake Loading Conditions written by Harry Bolton Seed and published by . This book was released on 1966 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Structure Change on Pore Pressure and Deformation Behavior of Soft Clays Under Surface Loadings written by Edward Cho-Che Tse and published by . This book was released on 1985 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Behavior of Stabilized Soils Under Repeated Loading written by James Kenneth Mitchell and published by . This book was released on 1965 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Load deformation Behavior of Saturated Clays During Undrained Shear written by Edward B. Kinner and published by . This book was released on 1970 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Strength of Clays Under Simulated Earthquake Loading Conditions written by Harry Bolton Seed and published by . This book was released on 1960 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Report written by American University of Beirut and published by . This book was released on 1983 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transportation Research Record written by and published by . This book was released on 1995 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: "For more than 50 years, the Transportation Research Record has been internationally recognized as one of the preeminent peer-reviewed journals for transportation research papers from authors in the United States and from around the world. One of the most cited transportation journals, the TRR offers unparalleled depth and breadth in the coverage of transportation topics from both academic and practitioner perspectives. All modes of passenger and freight transportation are addressed in papers covering a wide array of disciplines, including policy, planning, administration, economics and financing, operations, construction, design, maintenance, safety, and more."--Publisher's website
Download or read book Load deformation time Behavior in Clays written by Jong Sol Kim and published by . This book was released on 1969 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geotechnical and Geoenvironmental Engineering Handbook written by R. Kerry Rowe and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1130 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book The Behavior of Saturated Clay Under Seismic Loading Conditions written by Gerald Raymond Thiers and published by . This book was released on 1965 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Investigation of the Effects of Repeated Loads on the Strength of Compacted Clay written by Clarence K. Chan and published by . This book was released on 1954 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Water Content and Density on the Strength and Deformation Behavior of Clay Soils written by John Paul Malizia and published by . This book was released on 2016 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clays are used widely in sanitary landfills, embankment dams, highway embankments, hydraulic barriers, and foundations. In most of these applications, clays are compacted at maximum dry density (MDD) and optimum water content (OWC). Density and water content have a profound effect on the strength and deformation behavior of compacted clays. However, this effect has not been quantified in detail, especially the water content at which transition from brittle to plastic behavior occurs for low, medium, and high plasticity clays. The objective of this research was to investigate the effect of varying water content and density on the strength and deformation behavior of low, medium, and high plasticity clays, and to quantify the transition water content between brittle and plastic behavior for each type of clay. Initially, six samples each of low, medium, and high plasticity clays were compacted, three on the dry side and three on the wet side of OWC, to establish their compaction curves. The compacted samples were failed axially under unconfined compression and were visually inspected to determine the water content at which transition occurred between brittle and plastic deformation. Additionally, three samples of each type of clay were compacted at different water contents and failed using the direct shear test. The stress-strain curves from both tests were used to determine the transition water content between brittle and plastic behaviors. The MDD values for low, medium, and high plasticity clays were found to be 102.5 lb/ft3 (1.64 Mg/m3), 95 lb/ft3 (1.52 Mg/m3), and 89.5 lb/ft3 (1.43 Mg/m3), with the corresponding OWC values of 18%, 25%, and 27%, respectively. The compressive strength values for the low, medium, and high plasticity clays at MDD and OWC were 54 psi (344.8 kPa), 59 psi (413.8 kPa), and 60 psi (420.7 kPa), respectively. The unconfined compressive strength first increased and then decreased with increasing water content, with the change in trend occurring within 5% of OWC for each type of clay. The high plasticity clay had the highest cohesion while the low plasticity clay had the highest friction angle. The transition between brittle and plastic behavior for the low, medium, and high plasticity clays occurred between 19-20%, 27-29%, and 30-32% water content, respectively. This study was aimed at determining the transition water content as it relates to both brittle and plastic deformation. Earthquakes can cause failure of embankment dams in the form of cracking due to displacements or differential settlements from the vibrations. To prevent such failures from occurring, a homogenous embankment dam consisting of low plasticity clay (CL) or the clay core of a zoned embankment dam, must be compacted so that the clay material behaves more like a plastic material, i.e. deforms without a well developed failure plane. This study shows that, to ensure structural integrity of embankment dams in seismically active areas, the clay should not only be compacted wet of the OWC, but also on the wet side of the transition water content marking the boundary between brittle and plastic deformations.
Download or read book Dynamic Response and Deformation Characteristic of Saturated Soft Clay under Subway Vehicle Loading written by Yiqun Tang and published by Springer Science & Business Media. This book was released on 2014-01-08 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: Involving several areas of geological engineering, geotechnical engineering and tunnel engineering, this book describes the soft soil deformation characteristics and dynamic responses induced by subway vibration load. Based on field monitoring and laboratory testing data, with both comprehensive micro-and macroanalysis, the authors present dynamic characteristics and deformation settlement of saturated soft clay surrounding subway tunnels using dynamic and static methodology. Mechanism of deformation, failure in microstructure of soft clay soil, dynamic response, macro deformation and settlement are all discussed and analyzed thoroughly and systematically. Some of the research findings in this book have been widely applied by large subway companies and will have broader application prospects in future. All the above make this book a valuable reference not only for technical engineers working in subway design or construction but also for advanced graduate students. Prof. Yiqun Tang works at the Department of Geotechnical Engineering, Tongji University, Shanghai, China.
Download or read book An Investigation of the Strength and Stress strain Characteristics of Compacted Silty Clay written by Hiroshi Mori and published by . This book was released on 1955 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Behavior of Cement Stabilized Soil Under Repeated Loading written by Zhi-Gang Shen and published by . This book was released on 1965 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
