New GSI test method for resistance of conductive geosynthetics

June 1st, 2022

The Geosynthetic Institute (GSI) has a new test method for resistance measured across positions on conductive geosynthetics. Conductive geosynthetics contain an electrically charged backing (usually a thin layer of polyolefin with letdowns containing 20%–30% carbon black) that allows leaks to be detected in lined systems without the need for a conductive subgrade beneath the liner […]

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GSI landfill covers webinar upcoming

April 26th, 2022

GSI landfill covers webinar on May 11 will focus on the various components included in geosynthetic final covers for solid waste landfills. Geomembrane landfill cover, one type of emerging geosynthetics to be discussed in the GSI landfill covers webinar. Photograph courtesy of Layfield Group Ltd. The Geosynthetic Institute (GSI) will sponsor a webinar, “Landfill Covers: […]

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Layfield’s Fraser joins GSI board

April 20th, 2022

Layfield’s Fraser joins GSI board of advisors, bringing his 40+ years' experience in the geosynthetics industry to GSI. Brian Fraser joins GSI board of advisors. Photograph courtesy of Layfield Group Ltd. The Layfield Group Ltd. announced that Brian Fraser, vice president of business development for Layfield Geosynthetics, has been appointed to the Geosynthetic Institute (GSI) […]

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Geosynthetic Institute landfill failure webinar upcoming

April 8th, 2022

Geosynthetic Institute landfill failure webinar on April 20 will focus on 20 lined and unlined municipal solid waste (MSW) landfill failures. A recent installation of a geosynthetic clay liner (GCL) at a landfill in Australia. Photograph courtesy of Geofabrics Australasia Pty Ltd. The Geosynthetic Institute (GSI) will sponsor a webinar, “Behavior and Analysis of Twenty […]

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New GSI method for strain hardening of HDPE geomembranes

April 1st, 2022

Traditionally, high-density polyethylene (HDPE) geomembranes are checked for stress crack resistance using the ASTM D5397 single point-notched constant tensile load (SP-NCTL) test (Hsuan, Lord and Koerner [1990]). This test uses notched specimens, surfactant, and elevated temperatures to accelerate the behavior and force a brittle failure in HDPE geomembranes. With today’s high stress crack resistant HDPE […]

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GSI agriculture/aquaculture webinar upcoming

February 25th, 2022

GSI agriculture/aquaculture webinar on March 16, 2022, will focus on geosynthetics in farming and fish farming operations. A Raven Engineered Films geosynthetic agricultural silage cover. The upcoming GSI agriculture/aquaculture webinar will include such uses. Photograph courtesy of Raven Engineered Films The Geosynthetic Institute (GSI) will sponsor a webinar, “Geosynthetics in Agriculture and Aquaculture,” on March […]

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Reinforced levees to induce seepage path around geogrid layers?

February 1st, 2022

FIGURE 1 Reinforced levee expansion over existing dike using geosynthetics The Geosynthetic Institute (GSI) has been asked many times regarding several applications for different styles of geogrids if reinforced levees will induce a seepage path adjacent to and around geosynthetic layers. At this point, GSI has no case histories where it can quantify such behavior […]

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GSI to host webinar on geosynthetics in heap leach mining

January 27th, 2022

Photograph courtesy of NAUE GmbH & Co. KG The Geosynthetic Institute (GSI) will sponsor a webinar, “Geosynthetic Applications Used in Heap Leach Mining,” on Feb. 9, 2022, from 11:30 a.m. to 1 p.m. EST. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. The […]

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GSI to host webinar on geosynthetics in hydraulic applications

December 23rd, 2021

A 30-mil (0.8-mm) polyvinyl chloride (PVC) geomembrane with a 10-ounces-per-square-yard (339-g/m2) nonwoven geotextile cushion is installed for a stormwater/erosion control project in Harrisburg, Pa. Photograph courtesy of ACF Environmental The Geosynthetic Institute (GSI) will sponsor a webinar, “Geomembranes in Hydraulic Applications (dams, canals, reservoirs, tunnels, pipes),” on Jan. 12, 2022, from 11:30 a.m. to 1 […]

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GSI to host webinar on disposal of coal combustion residuals

November 26th, 2021

Photograph courtesy of Solmax The Geosynthetic Institute (GSI) will sponsor a webinar, “Disposal of Coal Combustion Residuals,” on Dec. 8, from 11:30 a.m. to 1 p.m. EST. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. With coal representing more than 25% of energy […]

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