Stopped Flow Conductivity as a Method of Particle Size Analysis of Clay PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Stopped Flow Conductivity as a Method of Particle Size Analysis of Clay PDF full book. Access full book title Stopped Flow Conductivity as a Method of Particle Size Analysis of Clay by Judith Maria Bonsall. Download full books in PDF and EPUB format.
Author: Judith Maria Bonsall
Publisher:
ISBN:
Category :
Languages : en
Pages : 235
Get Book Here
Book Description
When anisotropic particles such as clay are subjected to a shear stress in a flowing suspension they align themselves in the direction of the flow. When the shear stress is removed the particles will relax to a random orientation. The rate at which this relaxation occurs is related to the size of the particles. Watson and Jennings (1992) studied the rotational relaxation of anisotropic particles in dilute suspension. They used an electric pulse to align the particles and measured the birefringence of the suspension as the particles relaxed to random orientations when the pulse was switched off. They found that the initial rate of relaxation and the area under the relaxation curve could be used to calculate the particle size of the sample. The research described in this thesis uses flow through a narrow tube to cause clay particles to align and then their rotational relaxation is studied by measuring the change in conductivity between the flowing state and the non-flowing state. The development of the instrument is described, and the experiments carried out to determine the optimum operating conditions for maximum change in conductivity. The conclusion was that the technique, although not a complete success at this stage, could with further work and modifications provide data on the median size and spread of a distribution of anisotropic particles.
Author: Judith Maria Bonsall
Publisher:
ISBN:
Category :
Languages : en
Pages : 235
Get Book Here
Book Description
When anisotropic particles such as clay are subjected to a shear stress in a flowing suspension they align themselves in the direction of the flow. When the shear stress is removed the particles will relax to a random orientation. The rate at which this relaxation occurs is related to the size of the particles. Watson and Jennings (1992) studied the rotational relaxation of anisotropic particles in dilute suspension. They used an electric pulse to align the particles and measured the birefringence of the suspension as the particles relaxed to random orientations when the pulse was switched off. They found that the initial rate of relaxation and the area under the relaxation curve could be used to calculate the particle size of the sample. The research described in this thesis uses flow through a narrow tube to cause clay particles to align and then their rotational relaxation is studied by measuring the change in conductivity between the flowing state and the non-flowing state. The development of the instrument is described, and the experiments carried out to determine the optimum operating conditions for maximum change in conductivity. The conclusion was that the technique, although not a complete success at this stage, could with further work and modifications provide data on the median size and spread of a distribution of anisotropic particles.
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 308
Get Book Here
Book Description
Author: G.E. Christidis
Publisher: The Mineralogical Society of Great Britain and Ireland
ISBN: 0903056283
Category : Science
Languages : en
Pages : 508
Get Book Here
Book Description
The advancement of human civilization has been intimately associated with the exploitation of raw materials. In fact the distinction of the main historical eras is based on the type of raw materials used. Hence, passage from the Paleolithic and Neolithic Age to the Bronze Age is characterized by the introduction of basic metals mainly copper, zinc and tin in human activities; the Iron Age is marked by the use of iron as the predominant metal. The use of metals has increased and culminated with the industrial revolution in the mid-eighteenth century, which marked the onset of the industrial age in the western world. Since then the importance of metals has gradually been surpassed by industrial minerals in the industrialized countries. Industrial minerals are raw materials used by industry for their physical and/or chemical properties. Characterization of industrial minerals is important for their assessment and can be demanding and often complicated. This new volume, co-published by the European Mineralogical Union and the Mineralogical Society of Great Britain & Ireland, is based on papers presented at an EMU-Erasmus IP School which was held in the Technical University of Crete, Chania, Greece. The aim of the School was to describe advances in some of the analytical methods used to characterize industrial minerals and to propose additional methods which are currently not used for this purpose.
Author: Jessica Elzea Kogel
Publisher: SME
ISBN: 9780873352338
Category : Nature
Languages : en
Pages : 1576
Get Book Here
Book Description
News, Inc., Portland, OR (booknews.com).
Author: Jaan H. Pu
Publisher: Frontiers Media SA
ISBN: 2832509894
Category : Science
Languages : en
Pages : 268
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Paint
Languages : en
Pages : 1764
Get Book Here
Book Description
Author: Pat M. Cashman
Publisher: CRC Press
ISBN: 1000080749
Category : Technology & Engineering
Languages : en
Pages : 843
Get Book Here
Book Description
Praise for the Second Edition: "This is the book that the dewatering sector really needs – it is reliably based on sound theory and profound understanding of the physical processes, yet is presented in a very accessible and user-friendly manner. It draws on many, many decades of experience, and yet is utterly up to date. . . . It is a one-stop shop for the dewatering practitioner – who can nonetheless rest assured that the theoretical basis of the methods presented is flawless." — Professor Paul L. Younger, FGS, FICE, C.Geol., C.Eng., FREng, University of Glasgow, Scotland, UK "The best reference on this topic available . . . and will prove useful to a wide variety of readers ranging from junior construction engineers or dewatering contractors to theoretical hydrogeologists and environmental managers. It is rare that a book is able to bridge the gap between theoretical design guidance and practical application." — S.N. Sterling, University of Waterloo, Canada The extensively updated Groundwater Lowering in Construction: A Practical Guide to Dewatering, 3rd Edition offers practical advice on all phases of groundwater control systems, from planning and design, through installation and maintenance, and ultimately decommissioning. The expertise provided in this book can help you improve working conditions, increase project viability, save time and reduce excavation costs. Designers and managers of construction and engineering projects are given the tools necessary to effectively control groundwater. The content is divided into three sections – Principles, Design and Construction. The Principles section explains the fundamentals of groundwater flow as it relates to civil engineering excavations. The Design section explores in extensive detail site investigation, permeability assessment methods and groundwater control strategies. Chapters in the Construction section describe dewatering and exclusion techniques, and examine the complete life cycle of a groundwater control scheme, including monitoring, maintenance and decommissioning. This section incorporates eleven case histories from the authors’ casebook. The 3rd edition has been greatly revised and updated, and contains more than 200 new illustrations. The new content covers: Permeability of soils and rocks Groundwater problems for excavations in rock Groundwater control for tunnelling projects, such as shafts and cross passages Methods for assessing permeability Decommissioning of dewatering systems Optimisation of groundwater control schemes. The new, expanded content offers valuable direction that can give you a true competitive advantage in the planning and execution of temporary and permanent dewatering works for excavation and tunnelling. Written for practising engineers, geologists and construction managers, as well as postgraduate engineering students, this revamped manual on design and practice presents numerous case studies and extensive references to enhance understanding. Martin Preene is a groundwater consultant, based in the UK. He has more than 30 years’ experience working on dewatering and groundwater control projects worldwide. The late Pat Cashman was the leading British exponent of groundwater control for his generation, championing a practical and straightforward approach for more than forty years.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 832
Get Book Here
Book Description
Author: American Ceramic Society
Publisher:
ISBN:
Category : Ceramic materials
Languages : en
Pages : 1076
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Automatic control
Languages : en
Pages : 452
Get Book Here
Book Description
