Download or read book A Study of Desiccation Cracking in Clay Layers at Landfills written by Tara Lynn O'Leary and published by . This book was released on 1999 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multiphysical Testing of Soils and Shales written by Lyesse Laloui and published by Springer Science & Business Media. This book was released on 2012-08-22 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: Significant advancements in the experimental analysis of soils and shales have been achieved during the last few decades. Outstanding progress in the field has led to the theoretical development of geomechanical theories and important engineering applications. This book provides the reader with an overview of recent advances in a variety of advanced experimental techniques and results for the analysis of the behaviour of geomaterials under multiphysical testing conditions. Modern trends in experimental geomechanics for soils and shales are discussed, including testing materials in variably saturated conditions, non-isothermal experiments, micro-scale investigations and image analysis techniques. Six theme papers from leading researchers in experimental geomechanics are also included. This book is intended for postgraduate students, researchers and practitioners in fields where multiphysical testing of soils and shales plays a fundamental role, such as unsaturated soil and rock mechanics, petroleum engineering, nuclear waste storage engineering, unconventional energy resources and CO2 geological sequestration.
Download or read book Assessment of the Performance of Engineered Waste Containment Barriers written by National Research Council and published by National Academies Press. This book was released on 2007-09-22 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: President Carter's 1980 declaration of a state of emergency at Love Canal, New York, recognized that residents' health had been affected by nearby chemical waste sites. The Resource Conservation and Recovery Act, enacted in 1976, ushered in a new era of waste management disposal designed to protect the public from harm. It required that modern waste containment systems use "engineered" barriers designed to isolate hazardous and toxic wastes and prevent them from seeping into the environment. These containment systems are now employed at thousands of waste sites around the United States, and their effectiveness must be continually monitored. Assessment of the Performance of Engineered Waste Containment Barriers assesses the performance of waste containment barriers to date. Existing data suggest that waste containment systems with liners and covers, when constructed and maintained in accordance with current regulations, are performing well thus far. However, they have not been in existence long enough to assess long-term (postclosure) performance, which may extend for hundreds of years. The book makes recommendations on how to improve future assessments and increase confidence in predictions of barrier system performance which will be of interest to policy makers, environmental interest groups, industrial waste producers, and industrial waste management industry.
Download or read book Desiccation in Clay Soils written by Construction Research Communications Ltd and published by . This book was released on 1996 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Desiccation in clay soils can result in shrinkage of the soil and subsidence of the ground; this may lead to damage to buildings. As the soil re-hydrates, it can swell, resulting in ground heave; this may also cause damage to buildings. In many ground investigations, it is important to establish the extent and depth of any desiccation but this is not always easy. This Digest describes the most commonly used techniques for detecting desiccation and gives guidance on how to use the results of some of these techniques to estimate heave potential.
Download or read book Vertisols and Technologies for their Management written by N. Ahmad and published by Elsevier. This book was released on 1996-12-11 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vertisols, one of the eleven established soil orders, are clay soils with unusual and interesting properties. They cover more than 350 million hectares of land in the world and in tropical Africa alone there are over 100 million hectares. Because of their very small particle size and high surface area, these soils have higher physical and chemical reactivity than other soils. Their interaction with agrochemicals/industrial wastes, has been, increasingly, the subject of research especially in the last two decades. Vertisols create special problems when used for engineering purposes. This book is intended to provide comprehensive and state-of-the-art information about Vertisols worldwide. Special attention is given to the use and management of soils such as fertilizer use, crop selection, soil tillage, water restriction on land including irrigation, and soil erosion. A special chapter has been added to deal with geotechnical engineering of Vertisols. Vertisols have great potential for agricultural production but many, especially in the developing world, are underutilized due to a lack of understanding regarding their behaviour and management. This book is written by leading scientists worldwide. It is expected that this monograph will be of great use to soil scientists and agronomists, graduate and senior graduate students. Improvement of their management may solve the current food deficiency in the world.
Download or read book Theory of Flow and Fracture of Solids written by Arpád Nádai and published by . This book was released on 1950 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of Desiccation Cracking and Fracture Properties of Clay Soils written by Warnakulasuriya D Susanga M Costa and published by . This book was released on 2010 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: The thesis focuses on the development of shrinkage cracking in clay soils upon drying and the determination of fracture properties of clay soils as applicable to analysis of desiccation cracking phenomenon. The results and conclusions were drawn from comprehensive experimental work analysed drawing from Classical Soil Mechanics, Fracture Mechanics, Unsaturated Soil Mechanics and Mechanics of Materials with the aid of powerful image analysis techniques. Attempts were made to fill the gaps in the existing knowledge related to scope of the thesis as identified by a detailed study on the previous works. Three types of soils were used for the work presented in this thesis: Merri-Creek clay, Werribee clay and milled fine sand. The former two are naturally available materials in the Melbourne region. The last material was sourced from a commercial dealer. Potato starch was also used in desiccation tests as an alternative material to examine the crack patterns different from clays. Qualitative and quantitative studies were carried out using these materials aiming to acquire deeper understanding of the cracking mechanisms. Effects of desiccation rate, specimen thickness and particle size on crack patterns were studied. The influence of stress distribution and flaw distribution on crack initiation was also discussed. Image analysis techniques were used extensively to investigate the deformations of soil particles during drying. Shrinkage characteristics and onset of crack initiation were closely studied with displacement vector fields and strain isochrones. Interesting observations were made during these studies which led to deeper understanding of the subject, especially in relation to the mechanisms of crack initiation and associated modelling approaches. Fracture properties of Werribee clay was investigated using SENB beam test. Fracture toughness, fracture energy of Werribee clay was measured using three methods. An attempt was made to explain the behaviour of these parameters with the water content. Finally, an innovative test method to determine the J-integral was introduced. The test is specially designed to determine the J-integral of desiccating soils.
Download or read book Ground Improvement and Reinforced Soil Structures written by C. N. V. Satyanarayana Reddy and published by Springer Nature. This book was released on 2021-07-27 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume comprises the select proceedings of the Indian Geotechnical Conference (IGC) 2020. The contents focus on recent developments in geotechnical engineering for sustainable tomorrow. The volume covers the topics related advances in ground improvement of weak foundation soils for various civil engineering projects and design/construction of reinforced soil structures with different fill materials using synthetic and natural reinforcements in different forms.
Download or read book Effect of Density Initial Water Content Drying Temperature Layer Thickness and Plasticity Characteristics on Shrinkage Crack Development in Clay Soils written by Chinmay Vivekananda Lokre and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to investigate the effect of density, water content, drying temperature, layer thickness, and plasticity index on the nature of shrinkage cracks that result from drying of wet clay. Clay soils are widely used in construction of embankment dams, levees, highway embankments, sanitary landfills, hydraulic barriers, and foundations. For most of these projects, the clay is compacted at maximum dry density (MDD) and optimum water content (OWC). The climatic conditions can change repeatedly during the service life of structures made primarily of clay, resulting in corresponding changes in water content. This is particularly the case in Africa, Central America, and South Asia where prolonged periods of sunshine and intense heat follow monsoon season, characterized by intense, and occasionally prolonged, periods of precipitation. A decrease in water content upon drying causes a decrease in volume of clay, resulting in development of shrinkage cracks. Five samples each of low plasticity clay (CL), medium plasticity clay (CM), and high plasticity clay (CH), as indicated by the plasticity index values for each clay, were compacted at water contents on both sides of the OWC to establish the compaction curves. The MDD values for CL, CM, and CH samples were found to be at 101.9 lb/ft3 (1.63 Mg/m3), 97.6 lb/ft3 (1.56 Mg/m3), and 94.2 lb/ft3 (1.51 Mg/m3), respectively, whereas the corresponding OWC values were 20.7%, 25.2%, and 40.2%, respectively. The compacted samples were oven-dried at temperatures of 10oC (50oF), 20oC (68oF), 30oC (86oF), 40oC (104oF), and 50oC (122oF). Upon attaining a constant dry weight, the nature of any cracks developed in the samples (i.e. crack length, crack aperture, crack area, etc.) was examined and photographs of the samples were taken.In addition to the compacted samples, uncompacted (loose) clay layers of varying thicknesses (5 mm, 7 mm, 10 mm, 20 mm, and 30 mm) of the three types of clay were saturated and oven dried at the aforementioned temperatures to investigate the effect of clay layer thickness on shrinkage crack parameters like crack length, crack aperture, and crack area. Compacted samples simulate the behaviour of clays as used in their engineering applications, whereas uncompacted samples simulate their behavior in undisturbed natural state.The length, aperture, and area of the developed cracks for each clay type were correlated with dry density, initial water content, drying temperature, clay layer thickness, and plasticity index. Compacted samples of only CH showed clear signs of shrinkage crack development whereas compacted samples of CL and CM did not develop shrinkage cracks. Therefore, the CL and CM samples could not be analysed for crack length, aperture, and area. Compacted CH samples exhibited an increase in crack length, crack aperture and crack area with an increase in dry density and water content. For uncompacted samples, the crack length and crack area reduced with increasing layer thickness, and crack aperture increased with increasing layer thickness.
Download or read book Eagle Mountain Landfill and Recycling Center Project Riverside County written by and published by . This book was released on 1997 with total page 1128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Desiccation Cracks and their Patterns written by Lucas Goehring and published by John Wiley & Sons. This book was released on 2016-03-09 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bringing together basic ideas, classical theories, recent experimental and theoretical aspects, this book explains desiccation cracks from simple, easily-comprehensible cases to more complex, applied situations. The ideal team of authors, combining experimental and theoretical backgrounds, and with experience in both physical and earth sciences, discuss how the study of cracks can lead to the design of crack-resistant materials, as well as how cracks can be grown to generate patterned surfaces at the nano- and micro-scales. Important research and recent developments on tailoring desiccation cracks by different methods are covered, supported by straightforward, yet deep theoretical models. Intended for a broad readership spanning physics, materials science, and engineering to the geosciences, the book also includes additional reading especially for students engaged in pattern formation research.
Download or read book The Origin of Clay Minerals in Soils and Weathered Rocks written by Bruce B. Velde and published by Springer Science & Business Media. This book was released on 2008-07-18 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of huge relevance in a number of fields, this is a survey of the different processes of soil clay mineral formation and the consequences of these processes concerning the soil ecosystem, especially plant and mineral. Two independent systems form soil materials. The first is the interaction of rocks and water, unstable minerals adjusting to surface conditions. The second is the interaction of the biosphere with clays in the upper parts of alteration profiles.
Download or read book Ground Characterization and Foundations written by C. N. V. Satyanarayana Reddy and published by Springer Nature. This book was released on 2021-09-26 with total page 819 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises the select proceedings of the Indian Geotechnical Conference (IGC) 2020. The contents focus on recent developments in geotechnical engineering for a sustainable tomorrow. The book covers the topics related to traditional and latest methods in characterisation of ground at construction sites, recent technological developments/ advances in design of shallow and deep foundations in different subsoil conditions.
Download or read book Geotechnical Aspects of Landfill Design and Construction written by Xuede Qian and published by . This book was released on 2002 with total page 717 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focuses on actual, state-of-the-art design/construction procedures as opposed to a discussion of solid waste management issues and to general descriptions and/or conceptual designs. Provides an integrated package of analytical tools, design equations, and step-by-step construction procedures for all elements of a landfill, giving the reader a better sense of the necessary site investigation, planning, analysis, and organization that go into a landfill design and construction project.The characteristics of landfill containment envelopes and their design/construction are treated in detail. Physico-chemical and engineering properties of solid waste that are relevant and important to landfill design and construction are tabulated and described. Includes explanation of how to evaluate and assess potential problems that affect landfill performance such as sideslope stability, settlement, containment effectiveness, and erosion control. Discusses vertical landfill expansion; how leachate moves across a liner or barrier under both advection and diffusion; compares the containment effectiveness of different liner systems to the combined advective-diffusive transport of dissolved leachate solutes. Includes a detailed explanation with numerical examples and calculations of how to design a gas collection and piping system in a landfill—including the collection and handling of condensate in the gas. Detailed installation and inspection guidelines are provided for both earthen and geosynthetic liner/cover systems—comparing the relative advantages and limitations of each. For professional training courses in Geotechnical and Geoenvironmental Engineering.
Download or read book Design Construction and Evaluation of Clay Liners for Waste Management Facilities written by L. J. Goldman and published by . This book was released on 1988 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Encyclopedia of Engineering Geology written by Peter T. Bobrowsky and published by Springer. This book was released on 2018-08-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume addresses the multi-disciplinary topic of engineering geology and the environment, one of the fastest growing, most relevant and applied fields of research and study within the geosciences. It covers the fundamentals of geology and engineering where the two fields overlap and, in addition, highlights specialized topics that address principles, concepts and paradigms of the discipline, including operational terms, materials, tools, techniques and methods as well as processes, procedures and implications. A number of well known and respected international experts contributed to this authoritative volume, thereby ensuring proper geographic representation, professional credibility and reliability. This superb volume provides a dependable and ready source of information on approximately 300 topical entries relevant to all aspects of engineering geology. Extensive illustrations, figures, images, tables and detailed bibliographic citations ensure that the comprehensively defined contributions are broadly and clearly explained. The Encyclopedia of Engineering Geology provides a ready source of reference for several fields of study and practice including civil engineers, geologists, physical geographers, architects, hazards specialists, hydrologists, geotechnicians, geophysicists, geomorphologists, planners, resource explorers, and many others. As a key library reference, this book is an essential technical source for undergraduate and graduate students in their research. Teachers/professors can rely on it as the final authority and the first source of reference on engineering geology related studies as it provides an exceptional resource to train and educate the next generation of practitioners.
Download or read book The Science of Clays written by Swapna Mukherjee and published by Springer Science & Business Media. This book was released on 2013-10-09 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an attempt to provide a comprehensive and coherent description of three widely separated aspects of clays: the science of clays; the industrial uses of clays; and the role of clays in the environment. Most of the existing literature lacks such an integrated study and this work endeavours to fill that gap. An exhaustive account of the science of clays is presented in Part I of the book, which includes the classification, origin and evolution, composition and internal structure, chemical and physical properties of clays; soil mechanics; and analytical techniques for determining clay constituents. Part II provides a comprehensive description of the applications of clays and their derivatives in various industries, while Part III describes the role of clays in the environment; the pollution caused by clay minerals; and the application of clays in order to prevent environmental hazards. A principal feature of the book is its explanation of how the structure and composition of particular clay types facilitate their specific industrial or environmental applications, thus describing the interrelationship between three widely varying aspects of clay. A number of thought-provoking questions are raised at the end of the work in order to leave readers with a better insight in this regard.
