GSI to host webinar on geosynthetics in heap leach mining

July 28th, 2021

Photograph courtesy of Seaman Corp. The Geosynthetic Institute (GSI) will sponsor a webinar, “Geosynthetic Applications Used in Heap Leach Mining,”on August 11, from 11:30 a.m. to 1 p.m. EDT. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. The chemical extraction of precious metals […]

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GSI to host webinar on hydraulic applications

June 30th, 2021

The Geosynthetic Institute (GSI) will sponsor a webinar, “Geomembranes in Hydraulic Applications (dams, canals, reservoirs, tunnels, pipes),”on July 14, from 11:30 a.m. to 1 p.m. EDT. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. By 2040 it is estimated that two billion people […]

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GSI to host webinar on geosynthetics used in paved and unpaved roads

June 7th, 2021

Beginning in the 1930s, geotextiles and then geogrids have been used in unpaved and paved roads for the purposes of reduced stone base thicknesses and improved serviceability. For use as unpaved road reinforcement, the theory is developed to the point that the benefit/cost of using geotextiles or geogrids can be assessed. This application is very […]

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GMA honors Jie Han with Dr. Robert M. Koerner Award and Lecture Series

June 1st, 2021

The Geosynthetic Materials Association (GMA), led by a Koerner awardee selection task force, selected Jie Han, Ph.D., P.E., F.ASCE, as the recipient of the 2021–23 Dr. Robert M. Koerner Award and Lecture Series. The award and lecture series is named for the late Robert M. Koerner, Ph.D., the founder of the Geosynthetic Institute (GSI). “I […]

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An open solicitation to join in a round-robin effort to find a substitute for Igepal CO-630

June 1st, 2021

Improved stress-cracking resistance in high-density polyethylene (HDPE) geomembranes has been a quest of our industry and a hot research topic for years. The Geosynthetic Institute (GSI) has been working in this area since the mid-1980s. The GRI GM13 standard specification for HDPE geomembranes has moved the ASTM D5397 (appendix) single point notch constant tension load […]

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GSI to host webinar on testing of geosynthetics

May 3rd, 2021

The Geosynthetic Institute (GSI) will sponsor a webinar, “Testing of Geosynthetics,” on May 12, from 11:30 a.m. to 1 p.m. EDT. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. There are more than 250 different geosynthetic-specific test methods covered by consensus in ASTM […]

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A new specification for geotextile grout filled mattresses

April 1st, 2021

By George R. Koerner FIGURE 1 GGFM being filled incrementally. Courtesy of HUESKER Geotextile grout filled mattresses (GGFM), also referred to (in ASTM D18.25/D35.05) as fabric-formed concrete (FFC) or fabric-formed concrete revetments (FFCR), are erosion-resistant concrete linings made from durable, permeable fabric forms that are filled with high-strength grout. GGFMs are generally sloping structures placed […]

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GSI issues graduate student fellowships request for proposals

March 10th, 2021

The Geosynthetic Institute (GSI) has released a worldwide request for proposals (RFP) for 2021–22 focusing on innovative geosynthetic research and development projects. Recipients must be pursuing a masters or doctoral degree from an accredited college or university. There will be several awards given (between 8 and 16 awards), each for $5,000. Awards are merit-based, and […]

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GSI to host webinar on landfill covers

March 1st, 2021

The Geosynthetic Institute (GSI) will sponsor a webinar, “Landfill Covers: Past-Present-Emerging,”on March 10, 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. Participants will be able to assess past landfill cover practices and gain comparisons to present […]

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Extreme direct shear testing

February 1st, 2021

By George R. Koerner The Geosynthetic Institute (GSI) is doing direct shear testing under extreme environmental conditions (i.e., specifically extreme temperatures). At the prompting of two member companies, we have initiated an effort in this regard. This work looks at response curves over a wide range of normal pressures, 0–43.5 psi (0–300 kPa). The work […]

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