An Analysis of Sediment Shear Strength PDF Download

Author: Robert Carl Hansen
Publisher:
ISBN:
Category : Marine sediments
Languages : en
Pages : 198

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Author: James E. Halwachs
Publisher:
ISBN:
Category :
Languages : en
Pages : 32

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Book Description
The effect of rate of strain on shear strength of cohesive soils of marine sediments were studied. Vane shear (apparatus) tests were performed on an ocean sediment at varying permeabilities with various rates of shear. A variation in shear strength as high as 46.4% have been found over the range of rotation rates used in this experiment. Suggestions for further experimentation in this area are included. (Author).

Author: Robert Carl Hansen (Jr)
Publisher:
ISBN:
Category :
Languages : en
Pages : 104

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The part played by laboratory testing in the successful application of underwater soil mechanics to problems concerning ocean engineering depends both on the uniformity of the natural strata and on the skill and experience of the engineer. The empirical relationships developed in terrestrial soil mechanics for designing foundations and determining soil mass stability are based to a major extent on triaxial tests, while virtually all data on marine sediments have been acquired using vane shear tests. The standard vane shear test has been most widely used because it can be performed quickly, with a minimum of sample disturbance, and the equipment is relatively simple and inexpensive. This study concerns the determination of laboratory shear strength for a marine soil, and evaluates the relationship between the vane shear test and triaxial test results. For the particular sediment tested (a clayey silt), the initial tests indicate the vane shear peak strength to be 10% of the triaxial test peak shear strength, however, thus far, the writer has found virtually no correlation between the two tests.

Author: Ronald C. Chaney
Publisher: ASTM International
ISBN: 9780803104310
Category : Technology & Engineering
Languages : en
Pages : 561

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Philadelphia, PA : ASTM, 1985.

Author: Ramesh Chandra Dwivedi
Publisher:
ISBN:
Category : Electromagnetic waves
Languages : en
Pages : 204

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Author: Ray B. Krone
Publisher:
ISBN:
Category : Estuarine sediments
Languages : en
Pages : 112

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Author: Pierre Y. Julien
Publisher: Cambridge University Press
ISBN: 9780521636391
Category : Science
Languages : en
Pages : 302

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Book Description
This text offers a thorough analysis of erosion, transport and sedimentation of soil and solid particles by surface waters. The author has aimed for simplicity of presentation, stressing physical understanding based on Newtonian mechanics. He explains fundamental concepts pertaining to the hydrodynamic forces exerted on solid particles, with a lucid treatment of potential flow, viscous flow, turbulent flow, and boundary layers. The text presents detailed methods and procedures commonly used in engineering practice. It also features a variety of exercises and problems for students and researchers, along with numerous examples and case studies for practicing engineers seeking solutions to real-world problems. Students, reseachers, and practitioners in civil, environmental, agricultural, mechanical and chemical engineering, hydrology, sedimentology, and natural resources will find valuable information in this text intended for the classroom and beyond.

Author: Johan C. Winterwerp
Publisher: Elsevier
ISBN: 0080473733
Category : Science
Languages : en
Pages : 577

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Book Description
This book is an introduction to the physical processes of cohesive sediment in the marine environment. It focuses on highly dynamic systems, such as estuaries and coastal seas. Processes on the continental shelf are also discussed and attention is given to the effects of chemistry, biology and gas.The process descriptions are based on hydrodynamic and soil mechanic principles, which integrate at the soil-water interface. This approach is substantiated through a classification scheme of sediment occurrences in which distinction is made between cohesive and granular material. Emphasis is also placed on the important interactions between turbulent flow and cohesive sediment suspensions, and on the impact of flow-induced forces on the stability of the seabed. An overview of literature on cohesive sediment dynamics is presented and a number of new developments are highlighted, in particular in relation to floc formation, settling and sedimentation, consolidation, bed failure and liquefaction and erosion of the bed. Moreover, it presents a summary on methods and techniques to measure the various sediment properties necessary to quantify the various parameters in the physical-mathematical model descriptions. A number of examples and case studies have been included.

Author: Tetsuya Kusuda
Publisher: Elsevier
ISBN: 008055654X
Category : Science
Languages : en
Pages : 519

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Book Description
Sediments and Ecohyraulics is comprised of papers submitted to the 6th International Conference on Cohesive Sediments (INTERCOH 2005) held in Saga, Japan, September 2005. The papers are divided into two major categories. The first is basic processes, including erosion, settling, flocculation, and consolidation. The second major catagory is application of the understanding of cohesive sediments to address specific issues, including waterway and part management, fluid mud behavior, and contaminiated sediment management.*Provides an up-to-date resource of the present knowledge of cohesive sediment transport processes*Contains practical solutions on cohesive transport problems*Presents information on managing cohesive sediments

Author: Neville Burt
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 490

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Book Description
There is an alarming tendency today to assume that something calculated by a computer must be correct, yet the phrase 'garbage in, garbage out' (gigo) is possibly nowhere more (generally) appropriate than in computer modelling of cohesive sediment behaviour. The behaviour of 'mud' is highly complex and one only needs to look at a sample under a microscope to see why - the variety of particle shapes, not to mention the presence of living organisms, make it a substance with properties virtually unique to its situation which even change with time. For many years most researchers tended to avoid it, preferring to study sand and gravel, but a dedicated few tackled it and found a forum for discussing their work in the first Cohesive Sediments Workshop in Florida in 1980. The workshop met about every three years resulting in publication of some of the most definitive papers on the subject. By 1994 it was time to recognise the extensive research being carried on in Europe by holding the workshop in that region. Intercoh '94 (the 4th Nearshore and Estuarine Cohesive Sediment Transport Conference) drew together about 100 of the world's leading researchers in the field. The resulting papers, presented in this volume, truly represent the definitive state of the art on the measurement and modelling of mud properties today.