Investigation of Hydraulic Performance of Geosynthetic Clay Liner PDF Download
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Author: Mohammad Abul Fazal
Publisher:
ISBN:
Category :
Languages : en
Pages : 317
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Book Description
Author: Mohammad Abul Fazal
Publisher:
ISBN:
Category :
Languages : en
Pages : 317
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Book Description
Author: Guang-xin Li
Publisher: Springer Science & Business Media
ISBN: 3540693130
Category : Technology & Engineering
Languages : en
Pages : 875
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Book Description
Geosynthetics in Civil and Environmental Engineering presents contributions from the 4th Asian Regional Conference on Geosynthetics held in Shanghai, China. The book covers a broad range of topics, such as: fundamental principles and properties of geosynthetics, testing and standards, reinforcement, soil improvement and ground improvement, filter and drainage, landfill engineering, geosystem, transport, geosynthetics-pile support system and geocell, hydraulic application, and ecological techniques. Special case studies as well as selected government-sponsored projects such as the Three Gorges Dam, Qinghai-Tibet Railway, and Changi Land reclamation project are also discussed. The book will be an invaluable reference in this field.
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: V. Norotte
Publisher:
ISBN:
Category : Geosynthetic clay liner (GCL)
Languages : en
Pages : 12
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Book Description
In France, geosynthetic clay liners (GCLs) can be used under certain conditions within liner systems for waste containment. But there still remains a lot to learn regarding the potential modifications undergone by GCLs during prolonged contact with landfill leachate. In 2001, the French Environmental Agency (ADEME) initiated the LIXAR research program aimed at examining, at different scales of observation and for different experimental conditions, the modifications undergone by GCLs during prolonged contact with leachate. This paper focuses on the permeability-diffusion tests performed as part of this research program. Two types of needle-punched GCLs, a natural sodium bentonite GCL and a sodium-activated calcium bentonite GCL, were put in contact with three types of fluids in oedopermeameter cells. Contact duration was between 4 and 6 months. Results provide information regarding the relative performance of the two GCLs and the influence of the pre-hydration and percolation fluids.
Author: Lin Li
Publisher: Springer
ISBN: 9811301220
Category : Science
Languages : en
Pages : 509
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Book Description
This book is the eighth volume of the proceedings of the 4th GeoShanghai International Conference that was held on May 27 - 30, 2018. This book, entitled Ground Improvement and Geosynthetics”, presents the latest information on the new technologies and practical applications in various geotechnical engineering projects and advancements on ground improvement and geosynethetics. This volume presents detailed design procedures and examples to demonstrate the applications of the latest ground improvement technologies and innovative geosynethetics in geotechnical engineering. Topics include pile/column technology as foundations, retaining structures, or embankment supports, physical and chemical technologies for soil stabilization and ground improvement, geosynthetic reinforcement for roads, slopes, retaining walls, and foundations. Each of the papers included in this book received at least two positive peer reviews. The editors would like to express their sincerest appreciation to all of the anonymous reviewers all over the world, for their diligent work.
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: Mohamed Said Hussein Hosney
Publisher:
ISBN:
Category :
Languages : en
Pages : 1730
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Book Description
The use of geosynthetic clay liners (GCLs) as (i) covers for arsenic-rich gold mine tailings and landfills, (ii) subsurface barrier for migration of hydrocarbons in the Arctic, and (iii) basal liner for sewage treatment lagoons were examined. After 4 years in field and laboratory experiments, it was found that best cover configuration above gold mine tailings might include a layer of GCL product with polymer-enhanced bentonite and a geofilm-coated carrier geotextile serving above the tailings under [greater than or equal to] 0.7 m overburden. However, acceptable performance could be achieved with using a standard GCL with untreated bentonite provided that there is a minimum of 0.7 m of cover soil above the GCL. When GCL samples were exhumed from experimental landfill test cover with complete replacement of sodium in the bentonite with divalent cations in the adjacent soil, it was observed that the (i) hydraulic head across the GCLs, (ii) size of the needle-punched bundles, and (iii) structure of the bentonite can all significantly affect the value of the inferred in-situ hydraulic conductivity measured at the laboratory. The higher the hydraulic head and the larger the size of the needle-punched bundles, the higher the likelihood of internal erosion/structural change of bentonite at bundles that will cause a preferential flow for liquids to occur. A key practical implication was that GCLs can perform effectively as a single hydraulic barrier in covers provided that the water head above the GCL kept low. The hydraulic performance of a GCL in the Arctic was most affected by the location within the soil profile relative to the typical groundwater level with the highest increase in the hydraulic conductivity (by 1-4 orders of magnitude) for GCL below the water table. However, because the head required for jet fuel to pass through the GCL was higher than that present under field conditions, there was no evidence of jet fuel leakage through the barrier system. The leakage through GCLs below concrete lined sewage treatment lagoons was within acceptable limits, in large part, due to the low interface transmissivity between GCLs and the overlying poured concrete.
Author: Christian Kankam Wireko
Publisher:
ISBN:
Category : Civil engineering
Languages : en
Pages : 0
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Book Description
Results of this study also indicate that, due to the mobility the linear polymer gel, hydraulic conductivity testing of a PMB GCL should not be terminated until the ratio of effluent and influent TOC concentration is at least 1.25 or lower (id est TOCout/TOCin ≤ 1.25) in addition to the termination criteria specified by the current ASTM D6766, in order to adequately assess the long-term hydraulic performance of the PMB GCL. The time required to achieve this new TOC criterion varies depends on the chemistry of the permeant solution. The results of duplicate hydraulic conductivity tests show that high hydraulic gradient (>500) can be used to shorten the test duration. Hydraulic gradient only increases the rate at which polymer elutes but does not have any impact of final hydraulic conductivity of PMB GCLs.
Author: Jae-Myung Lee
Publisher:
ISBN:
Category : Geosynthetics
Languages : en
Pages :
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Book Description
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.
