Wide Width Geomembrane Testing
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Wide Width Geomembrane Testing
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Author : GR. Koerner
language : en
Publisher:
Release Date : 2000
Wide Width Geomembrane Testing written by GR. Koerner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Geomembrane categories.
Geomembranes are the most widely used components of liner and cover systems throughout the world. Arguably they are the most critical components of such systems. Millions of square meters of geomembrane have been used as liquid barriers over the past 20 years. However, there is debate over how to properly determine the performance tensile characteristic of these materials. This paper attempts to shed some light on obtaining uniaxial performance responses of commercially available geomembranes via ASTM D 4885, Standard Test Method for Determining Performance Strength of Geomembranes by the Wide Strip Tensile Method.
A Guide To Polymeric Geomembranes
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Author : John Scheirs
language : en
Publisher: John Wiley & Sons
Release Date : 2009-08-27
A Guide To Polymeric Geomembranes written by John Scheirs and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-08-27 with Technology & Engineering categories.
Geomembranes are flexible polymeric sheets which are used as relatively impermeable liners to contain liquid and vapour. With uses ranging from canal liners to hazard waste landfills, they are used extensively in a range of industries such as water conservation, mining, construction and waste management. A Guide to Polymeric Geomembranes: A Practical Approach offers an informed overview of the developments in this field and includes: Detailed discussion of the major geomembrane types Manufacturing methods Key performance properties Industrial applications Testing and chemical resistance of geomembranes Failure analysis methodology Written by a polymer research specialist with more than fifteen years experience in industry, this practical handbook covers the manufacture, use, installation, durability, lifespan and performance of geomembranes. It covers all the information required to enable the reader to select the most suitable geomembrane material for the job. This book is a useful reference for engineers and professionals in industry, environmental consultants, polymer and materials scientists, and government agencies and policy makers. It is of particular interest to those designing, commissioning and operating waste management sites, landfills, mine leachate ponds and water containment facilities.
Experimental Evaluation Of The Performance Of Geomembrane Liners Subject To Downdrag And Seismic Loading
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Author : Angel Gutierrez
language : en
Publisher:
Release Date : 2016
Experimental Evaluation Of The Performance Of Geomembrane Liners Subject To Downdrag And Seismic Loading written by Angel Gutierrez and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Geomembranes categories.
A series of experiments were conducted to support validation of a numerical model for the performance of geomembrane liners subject to waste settlement and seismic loading. These experiments included large scale centrifuge model testing of a geomembrane-lined landfill, small scale laboratory testing to get the relevant properties of the materials used in the large scale centrifuge model, and tensile tests on seamed geomembrane coupons. The landfill model in the large scale centrifuge test was built with a cemented sand base, a thin film NafionTM geomembrane liner, and a mixture of sand and peat for model waste. The centrifuge model was spun up to 60 g, allowed to settle, and then subjected to seismic loading at three different peak ground accelerations (PGA). Strain on the liner and settlement of the waste during model spin-up and subsequent seismic loading and accelerations throughout the model due to seismic loading were acquired from sensors within the model. Laboratory testing conducted to evaluate the properties of the materials used in the model included triaxial compression tests on the cemented sand base, wide-width tensile testing of the thin film geomembrane, interface shear testing between the thin film geomembrane and the waste material, and one dimensional compression and cyclic direct simple shear testing of the sand-peat mixture used to simulate the waste. The tensile tests on seamed high-density polyethylene (HDPE) coupons were conducted to evaluate strain concentration associated with seams oriented perpendicular to an applied tensile load. Digital image correlation (DIC) was employed to evaluate the strain field, and hence seam strain concentrations, in these tensile tests. One-dimensional compression tests were also conducted on composite sand and HDPE samples to evaluate the compressive modulus of HDPE. The large scale centrifuge model and small scale laboratory tests provide the necessary data for numerical model validation. The tensile tests on seamed HDPE specimens show that maximum tensile strain due to strain concentrations at a seam is greater than previously suggested, a finding with profound implications for landfill liner design and construction quality control/quality assurance (QC/QA) practices. The results of the one-dimensional compression tests on composite sand-HDPE specimens were inconclusive.
Grips Clamps Clamping Techniques And Strain Measurement For Testing Of Geosynthetics
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Author : Peter E. Stevenson
language : en
Publisher: ASTM International
Release Date : 2000
Grips Clamps Clamping Techniques And Strain Measurement For Testing Of Geosynthetics written by Peter E. Stevenson and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Geogrids categories.
The 12 papers address two issues: problems and techniques in testing and reporting data for strong reinforcement products, and creating a repeatable and reproducible test methodology for those materials. They identify 11 specific problems with the Society's ASTM D 4595 and its ISO counterpart ISO 10
Geomembranes Identification And Performance Testing
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Author : J.M. Rigo
language : en
Publisher: CRC Press
Release Date : 2004-03-01
Geomembranes Identification And Performance Testing written by J.M. Rigo and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-03-01 with Architecture categories.
Geomembranes are increasingly being used in transportation, environmental and geotechnical applications to control gas and liquid movement. This book provides authoritative guidance on testing of geomembranes. It has been prepared by an international committee of experts under the auspices of RILEM, the International Union of Research and Testing Laboratories for Materials and Structures.
Unconfined And Confined Wide Width Tension Testing Of Geosynthetics
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Author : JA. Fleck
language : en
Publisher:
Release Date : 1993
Unconfined And Confined Wide Width Tension Testing Of Geosynthetics written by JA. Fleck and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Geomembranes categories.
The thrust of this paper stems from the classical confined wide width testing work of McGown, Andrawes and their co-workers in 1981 and 1982 on geotextiles and extends it into the following geosynthetics which are currently used in various waste containment applications: • Woven and nonwoven geotextiles • Geomembranes • Geosynthetic clay liners • Geonets.
Geotextiles Geomembranes And Related Products Steep Slopes And Walls Embankments On Soft Soil Roads And Railroads Filtration And Drainage Erosion Control
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Author : G. den Hoedt
language : en
Publisher: CRC Press
Release Date : 1990
Geotextiles Geomembranes And Related Products Steep Slopes And Walls Embankments On Soft Soil Roads And Railroads Filtration And Drainage Erosion Control written by G. den Hoedt and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Geomembranes categories.
First published in 1990. Routledge is an imprint of Taylor & Francis, an informa company.
Geotextiles And Geomembranes Handbook
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Author : T.S. Ingold
language : en
Publisher: Elsevier
Release Date : 2013-10-22
Geotextiles And Geomembranes Handbook written by T.S. Ingold and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-22 with Technology & Engineering categories.
An essential introductory reference manual for anyone specifying, maintaining or manufacturing geotextiles and geomembranes.
Strain Concentrations In Polyethylene Geomembranes Adjacent To Seams And Scratches
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Author : Jake Andresen
language : en
Publisher:
Release Date : 2017
Strain Concentrations In Polyethylene Geomembranes Adjacent To Seams And Scratches written by Jake Andresen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Geomembranes categories.
Laboratory testing was conducted to quantify strain concentrations adjacent to seams and scratches in high density polyethylene (HDPE) geomembranes. The tensile strain profile of remnants meeting the ASTM criteria for wide-width tensile testing from samples of field seams recovered for construction quality assurance testing was evaluated using digital image correlation (DIC). Strains adjacent to scratches on laboratory prepared samples loaded in tension were also measured using DIC. The tensile strain in the zone adjacent to a seam and the tensile strain adjacent to a scratch were compared to the tensile strains calculated using theoretical strain concentration factors. The relationship between the maximum tensile strain adjacent to a seam and the global nominal strain in the sample was quantified for textured and smooth geomembranes of common thicknesses. Using statistical analysis of the data, bounds were developed for the allowable nominal tensile strain expected to induce maximum tensile strains adjacent to the seam less than or equal to the typical yield strain of HDPE geomembranes, at several confidence levels. Where nominal strain is the global or average strain applied to the sample and maximum strain is the largest tensile strain induced in the sample.The reduction in the nominal yield strain due to a scratch in a HDPE geomembrane was also quantified. The yield strain was approximately the same as predicted using theoretical strain concentration factors. The difference in the average measured maximum strains adjacent to the seams of textured and smooth HDPE geomembranes was found to be statistically insignificant. However, maximum strains adjacent to extrusion welded seams were somewhat greater than adjacent to fusion welded seams for nominal strains on the order of 3% to 4%. The results of the testing program suggest that the nominal tensile strain should be limited to 4% around dual hot wedge seams and 3% around extrusion fillet seams to avoid maximum strains equal to 11%, a typical yield strain for HDPE geomembranes.
Geotechnical Engineering Handbook
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Author : Braja M. Das
language : en
Publisher: J. Ross Publishing
Release Date : 2011
Geotechnical Engineering Handbook written by Braja M. Das and has been published by J. Ross Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Technology & Engineering categories.
The Geotechnical Engineering Handbook brings together essential information related to the evaluation of engineering properties of soils, design of foundations such as spread footings, mat foundations, piles, and drilled shafts, and fundamental principles of analyzing the stability of slopes and embankments, retaining walls, and other earth-retaining structures. The Handbook also covers soil dynamics and foundation vibration to analyze the behavior of foundations subjected to cyclic vertical, sliding and rocking excitations and topics addressed in some detail include: environmental geotechnology and foundations for railroad beds.