geosynthetic clay Articles

  • The Basics of Slope Stability Analysis for Geosynthetics

    Slope stability analysis is vital to preventing slope failures in a variety of engineering applications including landfill design, roads, dams and embankments, to name a few. Proper analysis anticipates both natural and manmade slopes and failure of foundations and retaining walls. This blog covers the necessity of slope stability analysis, how to conduct the analysis and the role of ...


    By Agru America, Inc.

  • Using Geosynthetics in Slope Stability

    The majority of slope failures within the geosynthetics industry can often be avoided with proper engineering and material selection. However, the factors that affect slope stability can be difficult to discern and measure. Soil thickness, seepage forces, seismic forces, gas uplift, geomembrane texturing, engineering and provision of reinforcing elements are only a few of the factors affecting ...


    By Agru America, Inc.

  • Interest Growing in Mining Applications for Geosynthetics

    Some 40 percent of the geosynthetics manufactured today are used by the mining industry, according to one estimate, and there are predictions that figure will increase as the industry continues to adopt mining technologies that help improve efficiency and protect the environment. Jack Caldwell, an engineer at Robertson GeoConsultants, has gone as far as to say, “We believe that ...


    By Agru America, Inc.

  • In-Plane Flow of Four Geosynthetics for Landfill Drainage

    The in-plane flow behavior of four geosynthetics, including three geonets and one geocomposite, for landfill drainage applications was investigated. Laboratory testing was performed to evaluate the effect of boundary material (cover material), hydraulic gradient, applied normal compressive stress, and time on the flow rate. The boundary materials investigated were a geomembrane, geotextile, sand, ...


    By ASTM International

  • What the Build America Bureau Means for Geosynthetics

    The Geosynthetic Materials Association anticipates higher demand for geosynthetics on the heels of the Fixing America’s Surface Transportation Act, or FAST act, and the recent addition of the Build America Bureau. The new group was created to support the $305 billion FAST Act, which provides long-term funding for U.S. infrastructure planning and ...


    By Agru America, Inc.

  • Watch your Language! Geosynthetics vs Traditional Materials

    During GeoAmericas 2016, Dr. Neil Dixon’s sustainability keynote touched upon many topics for the future of geosynthetics. While sustainability drove most of the lecture, a few of his ideas simply approached how the field positioned itself in the marketplace. He suggested, for example, moving the field away from isolating language like “versus traditional materials.” ...


    By Nilex

  • Geosynthetic/Soil Interface Friction Angles Using a Rotation Shear Device

    A modified rotation shear device was used for measuring interface friction angles between soils and geosynthetics. The device was modified so that a geosynthetic specimen can be attached to the upper platen. A reliable method for cutting and attaching geosynthetic specimens to the device is described. The geosynthetic mounting system is simple, strong, and easy to remove. Interface friction ...


    By ASTM International

  • Titan Geosynthetics: A Major Solution for CN Rail - Case Study

    The Canadian National Railway (CN Rail) wanted to build an additional 6-track extension at the Transcona yard in Winnipeg, Manitoba. Heavy rail cars were expected to pass over this extension area and CN Rail was looking for an economical, fast, environmentally friendly and technically sound solution for their track extension. The site had swampy conditions with wet and soft clay soils. In fact, ...

  • Hydraulic conductivity of compacted clay liners permeated with inorganic salt solutions

    Due to their low permeability, geosynthetic clay liners (GCLs) and compacted clay liners (CCLs) are the main materials used in waste disposal landfills. The hydraulic conductivity of GCLs and CCLs is closely related to the chemistry of the permeant fluid. In this study, the effect on the hydraulic conductivity of clays of five different inorganic salt solutions as permeant fluid was ...


    By SAGE Publications

  • GCL serves as cost-effective, time saving alternative to compacted clay liner in mine drainage settlement pond

    PROJECT: CONSOL Bailey Mine Tailings Pond LOCATION: West Finley, Pennsylvania PRODUCTS: BENTOMAT® SDN BACKGROUND: Bailey Mine, located in Southwestern Pennsylvania and owned by parent company CONSOL Energy Inc., supplies bituminous coal used in the generation of electricity. At the site, coal laden sediment is pumped to ...


    By CETCO

  • Performance assessment of deformation behaviour of landfill barriers at the onset of differential settlement

    The present study focuses on the performance of various impervious barriers of cover systems subjected to differential settlements. Various impervious barriers, namely Compacted Clay Liner (CCL), Geosynthetic Clay Liner (GCL) and Fibre Reinforced Clay Liner (FRCL) were subjected to differential settlements artificially in a centrifuge using hydraulic trap-door system. Distinct delay in water ...


    By Inderscience Publishers

  • 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

  • Landfill Liners Vary by Application

    It was in 1991 that the Environmental Protection Agency promulgated its Criteria for Municipal Waste Landfills that set location restrictions, design and operating standards, groundwater monitoring requirements, corrective actions, closure requirements, and more for landfills. It was these rules that mandated that landfills be lined on the sides and bottom before waste is deposited and capped on ...


    By Agru America, Inc.

  • Low-permeability liner solution for coal-ash by-products

    PROJECT: TVA Kingston Gypsum Pond Expansion LOCATION: Harriman, Tennessee PRODUCTS: BENTOMAT® 600CL BENTOMAT® CL EASY ROLLER™ Deployment System BACKGROUND: As part of its emissions control at the Kingston Fossil Plant, flue gas desulfurization is performed, which creates as a by-product a synthetic ...


    By CETCO

  • Road Over Sensitive Groundwater Areas - Case Study

    When constructing or extending new roads, the responsible designers and contractors are increasingly faced with the task of preventing soil contamination. Therefore, measures for the protection of the groundwater are necessary in more and more cases. The corresponding requirements and specifications for such measurements are regulated in the "guide-line for constructional measurements of roads in ...


    By NAUE GmbH & Co.KG

  • Federal motorway A6 Mannheim-Heilbronn case study

    Stable RiStWag -construction guidelines for roadways in water preservation areas Included in the A6 federal motorway construction project lot Mannheim – Heilbronn/Weinsberg, AS Bad Rappenau – AS Neckarsulm is the widening of km 631+640 and km 641+060 to six lanes. This section is runs through a water preservation zone, type IIIa, protected under RiStWag. Because of this, a ...


    By NAUE GmbH & Co.KG

  • 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 ...

  • In-situ stabilization of contaminated sediments at former pesticide facility case study

    Project: West Doane Lake Location: Portland, OR Products: Organoclay® Organic Adsorption Media, Bentomat® ST Geosynthetic Clay Liner Background: Clean-up action was approved by the DEQ for contaminated sediments in West Doane Lake at the former Rhone Poulenc pesticide manufacturing facilitysite located in Northwest ...


    By CETCO

  • 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

  • GCL used in stormwater pond helps maintain natural habitat for local cutthroat trout

    PROJECT: Kearns Meadow Stormwater Pond LOCATION: Jackson, Wyoming PRODUCTS: BENTOMAT® CL BACKGROUND: Kearns Meadow consists of 41-acres of land in the middle of Jackson, Wyoming. It contains approximately one mile of Flat Creek, which serves as an important spawning habitat for local cutthroat trout. ...


    By CETCO

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