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Author: M. Gunaratne Publisher: ISBN: Category : Consolidation Languages : en Pages : 9
Book Description
A new technique is formulated to predict the ultimate settlement (primary and secondary) of normally consolidated organic soils on the basis of the organic content. Data from a large number of oedometer tests on samples collected from organic soil deposits in Central Florida exhibit a definitive relationship of ultimate settlement versus organic content. These laboratory test results are analyzed using the Gibson and Lo rheological model to develop expressions for primary and secondary compressibilities in terms of organic content and consolidation pressure. It is shown how the compressibility relations predicted by the authors' approach concur with extensive data collected by other researchers. The usefulness of the authors' analytical relations is displayed by showing how the expected ultimate settlement of an organic soil subjected to a given pressure increase can be computed readily by using them.
Author: M. Gunaratne Publisher: ISBN: Category : Consolidation Languages : en Pages : 9
Book Description
A new technique is formulated to predict the ultimate settlement (primary and secondary) of normally consolidated organic soils on the basis of the organic content. Data from a large number of oedometer tests on samples collected from organic soil deposits in Central Florida exhibit a definitive relationship of ultimate settlement versus organic content. These laboratory test results are analyzed using the Gibson and Lo rheological model to develop expressions for primary and secondary compressibilities in terms of organic content and consolidation pressure. It is shown how the compressibility relations predicted by the authors' approach concur with extensive data collected by other researchers. The usefulness of the authors' analytical relations is displayed by showing how the expected ultimate settlement of an organic soil subjected to a given pressure increase can be computed readily by using them.
Author: Alan J. Lutenegger Publisher: CRC Press ISBN: 1000692396 Category : Technology & Engineering Languages : en Pages : 331
Book Description
This manual presents procedures for performing advanced laboratory tests on fine-grained soils. It covers characterization tests, which determine soil composition and quantify the individual components of a soil, and behavioral tests, such as the Atterberg Limits tests that demonstrate how the fines fraction of a soil reacts when mixed with water and the Linear Shrinkage Test that demonstrates how much a soil shrinks. The material goes beyond traditional evaluation of basic soil behavior by presenting more advanced laboratory tests to characterize soil in more detail. These tests provide detailed compositional characteristics which identify subtle changes in conditions and vertical variations in the soil, and which help to explain unusual behavior. A unique compilation of information on key soil tests Combines characterization tests with behavior tests The book suits graduate students in geotechnical engineering, as well as practitioners and researchers.
Author: P. Stinnette Publisher: ISBN: Category : Consolidation Languages : en Pages : 10
Book Description
Gibson and Lo (1961) compressibility parameters a and b for an organic soil can be determined from the organic content and the current pressure using the model presented by Gunaratne et al. (1998). These parameters, however, were developed based on results of laboratory one-dimensional consolidation tests and are valid for the K0 state. Researchers such as Edil et al. (1984) have found that the experimentally determined values of b in particular are larger for field situations. Therefore, the compressibility parameters have to be modified to predict field settlement under surcharges. This paper describes an extended model that addresses this issue and demonstrates how the laboratory-based b value can be corrected for field loading conditions. Finally, results of a full-scale, instrumented field settlement study of organic soil are shown to correlate well with the predictions of the extended model.
Author: Roberto Quental Coutinho Publisher: CRC Press ISBN: 1466584181 Category : Science Languages : en Pages : 1888
Book Description
Site characterization is a fundamental step towards the proper design, construction and long term performance of all types of geotechnical projects, ranging from foundation, excavation, earth dams, embankments, seismic hazards, environmental issues, tunnels, near and offshore structures. Geotechnical and Geophysical Site Characterization 4 provides practical applications of novel and innovative technologies in geotechnical and geophysical engineering, and is of interest to academics, engineers and professionals involved in Geotechnical Engineering.
Author: Peter T. Bobrowsky Publisher: Springer ISBN: 9783319735665 Category : Science Languages : en Pages : 0
Book Description
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.
Author: Bujang B.K. Huat Publisher: CRC Press ISBN: 0415659418 Category : Technology & Engineering Languages : en Pages : 284
Book Description
Peat and organic soils commonly occur as extremely soft, wet, unconsolidated surficial deposits that are an integral part of wetland systems. These types of soils can give rise to geotechnical problems in the area of sampling, settlement, stability, in situ testing, stabilisation and construction. There is therefore a tendency to either avoid building on these soils, or, when this is not possible, to simply remove or replace soils, which in some instances can lead to possibly uneconomical design and construction alternatives. However, in many countries of the world, these soils cover a substantial land area and pressure on land use is resulting in ever more frequent utilisation of such marginal grounds. For the successful design, construction and performance of structures on such marginal soils, it is crucial to predict geotechnical behaviour in terms of settlement, shear strength and stability, with respect to time. This means expanding our knowledge base and calls for a reliable characterisation of their geotechnical properties and mechanical behaviour and subsequently, the devising of suitable design parameters and construction techniques for dealing with these materials. A sound scientific understanding of the nature and functions of peat and organic soils is critical to their correct and safe use, and this book contributes by offering students, researchers, engineers and academics involved with these types of soils a comprehensive overview. This book will be useful not only to those in the field of geotechnical engineering, but also to soil scientists and agriculturalists, who are involved in the development of peatlands.
Author: A.K.L. Kwong Publisher: Routledge ISBN: 1351416170 Category : Technology & Engineering Languages : en Pages : 730
Book Description
This volume contains seven keynote lectures and over 100 technical contributions by scientists, researchers, engineers and students from more than 25 countries and regions worldwide on the subject of soft soil engineering.
Author: Hsai-Yang Fang Publisher: Springer Science & Business Media ISBN: 1475752717 Category : Science Languages : en Pages : 935
Book Description
More than ten years have passed since the first edition was published. During that period there have been a substantial number of changes in geotechnical engineering, especially in the applications of foundation engineering. As the world population increases, more land is needed and many soil deposits previously deemed unsuitable for residential housing or other construction projects are now being used. Such areas include problematic soil regions, mining subsidence areas, and sanitary landfills. To overcome the problems associated with these natural or man-made soil deposits, new and improved methods of analysis, design, and implementation are needed in foundation construction. As society develops and living standards rise, tall buildings, transportation facilities, and industrial complexes are increasingly being built. Because of the heavy design loads and the complicated environments, the traditional design concepts, construction materials, methods, and equipment also need improvement. Further, recent energy and material shortages have caused additional burdens on the engineering profession and brought about the need to seek alternative or cost-saving methods for foundation design and construction.
Author: M. Gunaratne
Author: M. Gunaratne
Author: Alan J. Lutenegger
Author: P. Stinnette
Author: Roberto Quental Coutinho
Author: Peter T. Bobrowsky
Author: Bujang B.K. Huat
Author: A.K.L. Kwong
Author: L. S. F. El-Amir
Author: Jarrett P. M.
Author: Hsai-Yang Fang