Geotextile filtration clogging resistance

February 1st, 2022

Q: I have a question about the Filter Criteria in the Federal Highway Administration (FHWA) procedure "Filter Performance and Design for Highway Drains" procedure, specifically the geotextile filtration clogging resistance equation 2-10. This seems to require a particularly large pore size; for example, if the D15 of the soil was for 70 microns, the minimum […]

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Sewn versus welded seams

February 1st, 2022

Q: On your GMA Techline website list of sample questions and answers, a question is asked about a recommendation for sewn versus welded seams for geotextiles. Bob Koerner answered this question by stating that you have done a study for joining geosynthetic clay liner (GCL) overlap seams via eight methods. Can you share that study […]

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Geosynthetics for stabilization in solar farm development

February 1st, 2022

FIGURE 1 Laying down geotextiles at Chicot Solar Energy Center, Chicot County, Ark. With renewed focus on clean electricity, an era with massive investment in new solar power has begun, leading to its widespread development. Although these systems have become more cost-effective, there are often solutions left on the table that could make the costs […]

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Profitable geosynthetics companies in 2022?

February 1st, 2022

Before the New Year, in October and November 2021, the first two in-person geosynthetics industry events since the pandemic began took place: the Geosynthetic Materials Association (GMA) fall Lobby Day in Washington, D.C., and GeoNashville 2021. Both were well attended, and many participants were energized by the opportunity to meet with colleagues face-to-face for the […]

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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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Fabricated Geomembrane Institute to stage webinar on textured geomembrane/nonwoven geotextile interfaces

January 3rd, 2022

Photograph courtesy of Layfield Group Ltd. The Fabricated Geomembrane Institute (FGI) will present a webinar, “Behavior of Textured Geomembrane–Nonwoven Geotextile Interfaces,” on Jan. 13, 2022, beginning at noon CST. The webinar is free for industry professionals and students, and 1 professional development hour (PDH) is available. The webinar will provide insight into the post-peak strength […]

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Pavement base reinforcement with geocells and geotextiles at a railway distribution facility

December 29th, 2021

Installation of geotextile and GEOWEB panels. Photograph courtesy of Presto Geosystems In 2018, BNSF Orillia Railway began making extensive upgrades to its automotive distribution facility in Renton, Wash. The upgrades were required to support the increased demand for new automobiles. As new-car sales soared, so did the demand for rail capacity for vehicle shipments arriving […]

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GSI to host webinar on geotextile filters

October 20th, 2021

Photograph courtesy of Ocean Non Woven Pvt. Ltd. The Geosynthetic Institute (GSI) will sponsor a webinar, “Geotextile Filters: Concerns and Issues,” on Nov. 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. It is roughly estimated […]

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Geosynthetic solutions to improve safety in mining applications

October 6th, 2021

Photograph courtesy of AGRU America What do Tesla, Apple and Ford have in common? They all rely on mines that produce metals like lithium, which drives our technology-hungry world. Now, more than ever, mining operations must run efficiently to meet increasing demand. Equally as important is supporting positive public beliefs on mining. Mining operators must incorporate […]

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Heat resistance of geomembranes

October 1st, 2021

Q: We have a question in regard to the heat resistance of geomembranes. We are interested in paving a road over a geomembrane with hot mix asphalt and want to know if the geomembrane will continue to function as a moisture barrier? A: The answer to this depends very much on the formulation from which […]

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