hdpe geomembrane Articles

  • Strain Measurement in HDPE Geomembrane Tensile Tests

    According to ASTM D 638, the tensile strain in an HDPE geomembrane dumbbell specimen subjected to a tensile test should be evaluated using an extensometer that records the elongation of a defined length of the central portion of the specimen. However, the current practice in the United States for HDPE geomembrane quality control and conformance testing consists of following the 1991 NSF standard ...


    By ASTM International

  • 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

  • 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

  • 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 ...

  • Notched Constant Tensile Load (NCTL) Test for High-Density Polyethylene Geomembranes

    A modification of an old test method, the notched constant tensile load (NCTL) test, is reintroduced to evaluate the stress-cracking performance of high-density polyethylene (HDPE) geomembranes. In this modified test, notched dumbbell-shaped specimens are subjected to a range of constant tensile loads in a 10% Igepal (CO-630) solution at 50°C. The method has been proposed to ASTM and is being ...


    By ASTM International

  • Slurry Lagoon Mountmellick - case study

    Lining Tech have completed lining works to construct a cost efficient 1,000,000 gallon geomembrane lined slurry lagoon in Mountmellick, County Laois. Works included the installation of a 2.5mm smooth HDPE liner in accordance with the Department of agriculture's specification S126 for geomembrane lined slurry lagoon. Works also included the fabrication and sealing of five pipe boot details around ...

  • Orana WTS emergency pond - case study

    Lining Tech have successfully completed subcontract geosynthetic lining works for Ostwald Bros on an Origin Energy APLNG emergency Pond in Orana, Queensland. The project included: Installation of 36,000m2 of a 1.5mm HDPE geomembrane liner Installation of HDPE level indicators to pond Fabrication and installation of HDPE access ladders Fabrication of HDPE sand tubes to ...

  • Designing A Better Alternative for Post-Closure Care

    After a landfill has reached the end of its service phase, federal law requires owners to install a final soil cover and maintain it over the next 30 years. This is the traditional strategy that most landfill owners employ and represents a significant cost of business. When all the layers are tallied together, the capping and post-closure period can cost up to $400,000 for a small, 100-acre ...


    By Agru America, Inc.

  • Crescent Duck gets its ducks in a row with GTI cover system - case study

    Crescent Duck, in coordination with its engineering consultants at Applied Technologies, Inc., contacted Geomembrane Technologies Inc. (GTI) for advice on replacing the damaged cover. As part of its research efforts, Crescent Duck visited another plant that had installed a GTI insulated gas collection cover and saw the quality and durability of the product first-hand. This site visit, combined ...

  • Cutting holes for testing vs. testing for holes

    When it comes to geomembrane quality assurance, are destructive testing practices as effective as basic leak detection technologies? The function of a geomembrane liner is to prevent liquid flow to the environment. CQA measures should be judged on how effective they are in meeting this requirement. This article critically examines the industry’s current means of providing confidence ...

  • James river lagoon , Marathon, Ont., Canada

    New federal and provincial guidelines for treatment of industrial waste have resulted in the construction of a secondary waste water treatment facility at a pulp mill in Marathon, Ont. The mill, owned by James River - Marathon, is located on the north shore of Lake Superior approximately 300 km west of Thunder Bay and includes a large secondary treatment basin which is 375 m long x 278 m wide x ...


    By Presto Geosystems

  • Prominant developer chooses CETCO gas vapor barrier for methane protection case study

    Project: Sienna Place Homes Location: Philadelphia. PA Products: Liquid Boot Gas Vapor Mitigation System Background: A prominant residential developer had selected an idle Brownfield for the site of a large multi-family residential development. Challenge: To mitigate potential methane vapor ...


    By CETCO

  • Easy roller deployment system puts installation back on schedule

    PROJECT: Coal Ash Disposal - Midwest Utility LOCATION: Central Illinois PRODUCTS: BENTOMAT® SDN, EASY ROLLERTM DEPLOYMENT SYSTEM BACKGROUND: The increased use of coal to generate electricity has brought with it an increased amount of coal combustion by-products (CCBs). Metal ions released from these CCBs can be harmful to ...


    By CETCO

  • Spray-applied barrier is proven vapor mitigation strategy for site with methane case study

    Project: Canada Post Location: Toronto, ON, Canada Products: Liquid Boot® Gas Vapor Mitigation System, GeoVent™ Gas Venting System Background: The site for the new Canada Post headquarters was situated on a former industrial location and is a major redevelopment zone for the city of Toronto. The site was ...


    By CETCO

  • Case study - Algae control in raw water reservoir Ecuador

    Before the installation of the LG Sonic e-line equipment algae grew on the surface and settle down on the liner before entering the drinking water treatment plant. To cover the 24.000 m2 of water surface, it was decided to install 3 devices.   The Challenge: Green Algae Covering the Sides of the Lagoon Located in Santa Elena’s peninsula, the 42.000 m3 raw water ...


    By LG Sonic

  • Bali’s first modern landfill design case study

    Bangli Regional Landfill in Indonesia’s Bali province is located about 60km outside of Denpasar, the provincial capital and home to more than 500,000 residents. The region hosts Ngurah Rai International Airport—the main entry point into Bali—and numerous tourist destinations along Bali’s popular white sands beaches. When the Indonesian central government approved ...


    By NAUE GmbH & Co.KG

  • Above Watertable Landfill (Groundwater Risk Assessment)

    Client: Waste Management Industry Location: Co-disposal landfill site Services: Hydrogeological risk assessment, landfill monitoring borehole installation, sample collection and data interpretation. Issues: Change in waste stream and potential risk to groundwater,  Summary: ESI provided site ...

  • Above watertable landfill (groundwater risk assessment)

    Client: Waste Management Industry Location: Co-disposal landfill site Services: Hydrogeological risk assessment, landfill monitoring borehole installation, sample collection and data interpretation. Issues: Change in waste stream and potential risk to groundwater,  Summary: ESI provided site ...

  • Crescent Duck Gets its Ducks in a Row by Switching to a GTI Cover

    The Customer: Crescent Duck Farm, located in Aquebogue, Long Island, NY, USA, produces only premium fresh and frozen ducks and duck products. Family-owned since 1908, Crescent Duck’s breeding and processing efforts have ensured that its products meet the standards of even the most discerning white tablecloth restaurants and Asian food trades. They also raise, slaughter, package, and ...

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