geomembrane cover Articles

  • Locating Leaks in Geomembrane Liners of Landfills Covered With a Protective Soil

    ABSTRACT The electrical leak location method was used to locate leaks in the geomembrane liners of single-lined and double-lined landfills covered with a protective soil cover. The landfills ranged in size from 0.40 hectare (one-acre) to 3.2 hectares (eight-acre). Water in the leak detection system under the primary liner indicated the primary liners were leaking. The principal of ...

  • Numerical modeling of geomembranes

    SoilVision Systems Ltd. is pleased to announce the addition of internal boundary conditions which can be used to represent geomembrane materials. The new feature was implemented in response to requests from customers and represents a significant improvement for the numerical modeling of a number of different scenarios involving geomembranes. More specifically, the geomembrane internal boundary ...


    By SoilVision Systems Ltd.

  • The Lighter Side of Geomembranes

    Geomembrane installations often cover substantial areas. Landfill cells pose enormous footprints. Oil and gas pits, industrial processing ponds, and wastewater containment ponds are large installations too, and each year they tend to be built a little larger. The scaling up of these facilities is not just a matter of achieving better operational economics for the ...


    By Nilex

  • Axisymmetric Tension Testing of Geomembranes

    The newly developed axisymmetric tension test is useful in evaluating the performance of geomembranes subjected to out-of-plane stress conditions such as those that can develop due to localized subsidence under waste-containment cover and liner systems. In this paper, the equations necessary to describe the geomembrane stresses and strains during testing are derived, and equations used to ...


    By ASTM International

  • Enhanced Geomembrane CQA through proper application of geomembrane leak location surveys

    Abstract Historically, geomembrane construction quality assurance (CQA) has focused on destructive testing of welded seams to verify seam strength and integrity. Paradoxically, seams are not subject to significant stress and practically never fail in service, while holes and construction damage in the geomembrane are a much more widespread problem. The historical approach fails to evaluate ...

  • Geomembrane protection - Case Study Summary 1

    Protecting geomembranes is critical to their long-term performance in many applications including lagoons, detention ponds, storm water containment basins, dikes, temporary dams and landfill covers.  The Geoweb® system, with a variety of infills, will provide armor protection to impervious liners or covers so that they can maintain their integrity. Inclusion of internal tendons and ...


    By Presto Geosystems

  • Locating Geomembrane Liner Leaks under Waste in a Landfill

    Abstract An Electrical Leak Imaging and Monitoring (ELIM SM) survey was used to locate leaks under 2.5 meters of stabilized waste in an active geomembrane-Iined landfill. The landfill is lined with two 2-mm thick HDPE geomembranes that are separated by a geonet drainage layer. The primary liner is covered with 600 mm of drainage sand and 2.5 meters of stabilized waste for a total cover ...

  • PVC Geomembrane Liner for Waste Containment in Wuhan - Case Study

    PVC geomembrane liner is a kind of impermeable liner, which is widely used in the modern municipal solid waste containment system. PVC is an abbreviation for Poly Vinyl Chloride. They are installed in the side and bottom liners to inhibit flow of leachates and thus prevent the contamination of groundwater. Manufactured by the calendaring or extrusion process, BPM PVC geomembrane has high puncture ...

  • Performance-Based Specification Of Electrical Leak Location Surveys For Geomembrane Liners

    ABSTRACT Electrical leak location surveys can be a crucial part of the final quality control of geomembrane liner installations. The method has been offered as a commercial service since 1985 and is the only practical test method that can find holes in the liner after protective soil cover is put on the liner. During the past fourteen years the test method has been used on a wide variety of ...

  • Size Effects for Multi-Axial Tension Testing of HDPE and PVC Geomembranes

    Geosynthetics may be subjected to multi-axial stress states from plane strain loading, such as dragdown along lined slopes and from out-of-plane loading conditions imposed by localized subsidence beneath waste containment cover and liner systems. The multiaxial tension test is useful in evaluating the performance of geosynthetics subjected to multi-axial stress states. However, widespread ...


    By ASTM International

  • Experience with GCLs used as a conductive layer in geomembrane leak-location surveys

    Engineers, installers, regulators, and owners are starting to rely on geomembrane leak-location surveys as part of the construction quality assurance for landfills. The various methods are described in ASTM Standard D 6747.' Standard procedures for conducting leak-location surveys of geomembranes covered with earth materials are described in ASTM Standard D 7007.2 Figure 1 shows the ...

  • Odor and Heat Contained Thanks to GTI Cover

    The Customer: A major American frozen food manufacturer with worldwide distribution. The Customer’s Needs: The frozen food manufacturer required a cover solution for its wastewater treatment system that would reliably contain odors and retain heat. The Solution: Geomembrane Technologies Inc. (GTI) designed, fabricated, ...

  • Detection and Location of Leaks in Geomembrane Liners Using an Electrical Method: Case Histories

    ABSTRACT A field-proven electrical technique, developed at Southwest Research Institute, San Antonio, Texas, is commercially available to detect and locate leaks in geomembrane liners. The electrical technique is used to inspect 100% of the geomembrane material that is covered by a conducting liquid. A voltage applied across the liner produces a uniform electrical potential distribution in ...

  • GTI Supplies Innovative Cover for Waste-to-Energy Digester

    The Customer: LaForge Bioenvironmental operates a waste-to-energy facility in a northwest farming community of New Brunswick, Canada. The system is located on a 1,000 acre (405 hectare) mixed farming operation, which includes the LaForge Holsteins dairy. LaForge planned to expand its 500kW combined heat and power (CHP) system to more than double the capacity by converting an existing holding ...

  • Town Branch WWTP Controls Odors with Modular Covers

    The Customer: The Town Branch Wastewater Treatment Plant located in Lexington, Kentucky, USA, serves a population of 130,000—about 60 percent of Lexington-Fayette County. The plant began operating in 1919, and currently treats almost 11 billion gallons of wastewater annually. The Customer’s Needs: The Town Branch Wastewater Treatment Plant ...

  • GTI Has HP Hood’s Wastewater Treatment System Covered

    The Customer: HP Hood LLC is one of the largest dairy operators in the United States with 13 plants across the country. It has been producing high quality, delicious dairy products for more than 160 years. The Customer’s Needs: HP Hood’s plant in Winchester, Virginia, USA, was undergoing a planned expansion to its wastewater treatment system to keep ...

  • Built-to-Last: GTI Cover Replaced After 20 Years

    The Customer: Creston is a small town in the Kootenay region of southern British Columbia, Canada. Since 1959, it has been home to Columbia Brewing, makers of Kokanee beer, now owned by Anheuser-Busch InBev. The Customer’s Needs: The Town of Creston wastewater treatment facility treats both domestic and industrial (brewery) wastewater. The brewery ...

  • Community`s Complaints about Odor Addressed with GTI Cover System

    After years of operating successfully in the community, the City of Bridgeport’s WPCA developed an odor problem at its East Side Wastewater Treatment Plant. It was an exceptionally hot summer, and the plant’s expansion/refurbishment project had taken one-third of the treatment plant facilities out of ser vice. Equipment that was still in ser vice was old and ...

  • GTI Cover at Pinnacle Foods Harnesses Energy from Anaerobic Digestion

    The Customer: Pinnacle Foods is a leading producer of quality branded food products, which can be found in 85 percent of American households. The Customer’s Needs: When Pinnacle Foods’ acquired the Wish Bone® and Western® salad dressing businesses, its production plant in St. Elmo, Illinois, USA, would need to expand for additional flow. ...

  • GTI Cover at Pinnacle Foods Harnesses Energy from Anaerobic Digestion

    The Customer: Pinnacle Foods is a leading producer of quality branded food products that are found in 85 percent of American households. The Customer’s Needs: When Pinnacle Foods’ acquired the Wish Bone® and Western® salad dressing businesses, its production plant in St. Elmo, Illinois, USA, would need to expand for additional flow. As ...

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