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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GSI to host webinar on MSE inspection

January 18th, 2021

The Geosynthetic Institute (GSI) will sponsor a webinar, “Mechanically Stabilized Earth (MSE) Wall, Berm and Slope Construction Inspection,” on February 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. The inspection (aka, monitoring) of MSE wall, […]

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GSI to host webinar on stability in landfill cover soils

December 7th, 2020

The Geosynthetic Institute (GSI) will sponsor a webinar, “Stability Design of Landfill Cover Soils,” on December 16, 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. This webinar focuses on the stability design of relatively thin soil […]

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GSI to host webinar on geosynthetics in erosion control

November 27th, 2020

The Geosynthetic Institute (GSI) will sponsor a webinar, “Geosynthetics in Erosion Control,” on December 9, 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 estimated societal cost of various types of landslides in the U.S. is […]

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GSI to host webinar on geosynthetics in paved and unpaved roads

November 22nd, 2020

The Geosynthetic Institute (GSI) will sponsor a webinar, “Geosynthetics used in paved and unpaved roads,” on December 2, 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. Beginning in the 1930s, geotextiles and later geogrids have been […]

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GSI to host webinar on QA/QC of waste containment systems

October 21st, 2020

The Geosynthetic Institute (GSI) will sponsor a webinar, “Quality Control/Quality Assurance (QA/QC) of Waste Containment Systems,” on November 4, 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. This presentation focuses on geosynthetics used in containment systems. […]

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GSI to host webinar on soil consolidation using wick drains

October 12th, 2020

The Geosynthetic Institute (GSI) will sponsor a webinar, “Soil Consolidation Using Wick Drains, aka PVDs.” on October 28, 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. Wick drains, also called prefabricated vertical drains (PVDs), consist of […]

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