Gas Permeability of Geosynthetic Clay Liners Under Various Conditions PDF Download
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Author: Thaveesak Vangpaisal
Publisher:
ISBN:
Category : Clay
Languages : en
Pages :
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Book Description
Author: Thaveesak Vangpaisal
Publisher:
ISBN:
Category : Clay
Languages : en
Pages :
Get Book Here
Book Description
Author: Heraldo Nunes Pitanga
Publisher:
ISBN:
Category : Gas permeability test
Languages : en
Pages : 7
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Book Description
Geosynthetic clay liners (GCLs) are often selected as a part of the barrier layer for cover systems in solid waste landfills to prevent infiltration of rainfall and migration of biogas into the atmosphere. To address the ability of GCLs to mitigate gas flow through cover layers, this paper presents an apparatus and testing method to measure the gas permeability of non-saturated and strained GCLs in the laboratory. The test is performed following a transient gas flow regime, and the test results are interpreted using a simple analytical solution. A series of gas permeability tests was performed on a needle-punched GCL with a degree of saturation between 32 % and 47 %. The specimens were tested under a 20 kPa load and 1.3 % strain in the radial direction, whereas the gas flow was induced by a gas differential pressure of less than 4 kPa. The results show that both the apparatus and the testing method can provide a reliable, fast, and simple method to measure the gas permeability of GCLs.
Author: Robert E. Mackey
Publisher: ASTM International
ISBN: 0803134843
Category : Clay
Languages : en
Pages : 161
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Book Description
Soon after the inception of ASTM D35.04 Subcommittee on Geosynthetic Clay Liners, the first symposium on Testing and Acceptance Criteria for Geosynthetic Clay Liners (GCLs), STP 1308, was held on 29 January 1996, in Atlanta, Georgia. The intention of the symposium was to bring together the current knowledge and understanding regarding this relatively new product used in containment systems. Since that symposium, numerous GCL standards have been developed along with a greater appreciation of the product's capabilities and limitations. ASTM D35 determined it was time to assess the current state of GCL technology to better address possible revisions of the present ASTM GCL standards and determine what new standards will be required in the future.
Author: H. Zanzinger
Publisher: CRC Press
ISBN: 1000108066
Category : Technology & Engineering
Languages : en
Pages : 412
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Book Description
Clay geosynthetic barriers are most frequently used in environmental areas, such as landfill cover systems. This work discusses the durability and lifetime aspects of clay geosynthetic barriers related to the synthetic yarns and fibres.
Author: Larry W. Well
Publisher: ASTM International
ISBN: 0803124716
Category : Geosynthetics
Languages : en
Pages : 270
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Book Description
An engineering perspective on the liners, which are used as barriers for containing liquid and in conjunction with geomembranes in landfills and capping systems. Explore aspects of testing for shear strength and long-term creep, issues and methods of testing for hydraulic conductivity, and specifica
Author: D.E. Daniel
Publisher: Springer Science & Business Media
ISBN: 1461530709
Category : Science
Languages : en
Pages : 686
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Book Description
Earth scientists and geotechnical engineers are increasingly challenged to solve environmental problems related to waste disposal facilities and cleanup of contaminated sites. The effort has given rise to a new discipline of specialists in the field of environmental geotechnology. To be effective, environmental geotechnologists must not only be armed with the traditional knowledge of fields such as geology and civil engineering, but also be knowledgeable of principles of hydrogeology, chemistry, and biological processes. In addition, the environmental geotechnologist must be completely up to date on the often complex cadre of local and national regulations, must comprehend the often complex legal issues and sometimes mind-boggling financial impli cations of a project, and must be able to communicate effectively with a host of other technical specialists, regulatory officials, attorneys, local land owners, journalists, and others. The field of environmental geo technology will no doubt continue to offer unique challenges. The purpose of this book is to summarize the current state of practice in the field of environmental geotechnology. Part One covers broadly applicable principles such as hydrogeology, geochemistry, and con taminant transport in soil and rock. Part Two describes in detail the underlying principles for design and construction of new waste disposal facilities. Part Three covers techniques for site remediation. Finally, Part Four addresses the methodologies for monitoring. The topics of 'waste disposal' and 'site remediation' are extra ordinarily broad.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309108098
Category : Science
Languages : en
Pages : 135
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Book Description
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.
Author: K. von Maubeuge
Publisher:
ISBN:
Category : Bentonite
Languages : en
Pages : 18
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Book Description
GCLs are primarily used to seal against water, because its very low permeability property. This very good sealing performance is caused by bentonite as sealing material, which is interspersed between two geotextiles as an approximately 10 mm thin layer of powder or granulate. The objective of performance tests of new bentonites in GCLs, is primarily to investigate how low the water permeability of the bentonite is, after its processing into a pulverised or granulate form, as it is required for their use in GCLs. The production of a test GCL for the purpose of performance testing, is very costly. Mainly due to economical reasons, producers of bentonites and GCLs are anxious to be able to predict the permeability by use of simpler test methods. The laboratory tests for bentonites commonly applied are methylene blue test, the fluid loss test ASTM D 5891, and the swelling volume after ASTM D 5890. However, they are only to a limited extend suitable for this purpose. But even highly sophisticated mineralogical and chemical investigations like x-ray diffraction and ion distribution are not helpful to forecast the water permeability value in the produced GCL.
Author: Adrian R. Russell
Publisher: CRC Press
ISBN: 1000115356
Category : Technology & Engineering
Languages : en
Pages : 1400
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Book Description
This book contains the contributions to the Second European Conference on Unsaturated Soils, E-UNSAT 2012, held in Napoli, Italy, in June 2012, and includes more than one hundred papers, addressing three thematic areas: experimental, modelling, and engineering.
Author: Raffaello Cossu
Publisher: Elsevier
ISBN: 0124078818
Category : Science
Languages : en
Pages : 1190
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Book Description
Solid Waste Landfilling: Concepts, Processes, Technology provides information on technologies that promote stabilization and minimize environmental impacts in landfills. As the main challenges in waste management are the reduction and proper treatment of waste and the appropriate use of waste streams, the book satisfies the needs of a modern landfill, covering waste pre-treatment, in situ treatment, long-term behavior, closure, aftercare, environmental impact and sustainability. It is written for practitioners who need specific information on landfill construction and operation, but is also ideal for those concerned about the possible return of these sites to landscapes and their subsequent uses for future generations. Includes input by international contributors from a vast number of disciplines Provides worldwide approaches and technologies Showcases the interdisciplinary nature of the topic Focuses on sustainability, covering the lifecycle of landfills under the concept of minimizing environmental impact Presents knowledge of the legal framework and economic aspects of landfilling
