GSI to host webinar on geotextile filters

May 12th, 2020

The Geosynthetic Institute (GSI) will sponsor a webinar, “Geotextile Filters: Concerns and Issues,” on May 20, 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. It is roughly estimated that geotextiles have been used in more than […]

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GSI to host webinar on geotextile filters

March 27th, 2019

The Geosynthetic Institute (GSI) will sponsor a webinar, “Geotextile Filters: Concerns and Issues,” on April 10, 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. It is roughly estimated that geotextiles have been used in more than […]

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The magic of water and geosynthetics

February 1st, 2019

Water is a fundamental issue in many projects using geosynthetics. From erosion control to reservoir liners and covers, from landfill leachate pond barriers to coal ash dewatering, handling water and the effects of water are considerations nearly every engineer employing geosynthetics considers. Geosynthetics can effectively manage water applications of erosion control, reinforcement, barriers, filtration and […]

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KMS installs PURON PLUS package system in Canada featuring PULSION MBR

October 31st, 2018

Koch Membrane Systems (KMS), a leader in the development and manufacture of membrane-based filtration technologies, announced the commissioning of a PURON PLUS packaged MBR system in Saskatoon, Saskatchewan, Canada. The PURON PLUS system provides a compact and turnkey wastewater treatment solution that is fully automated and provides consistent high-quality effluent for safe discharge or reuse. […]

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The many applications for geosynthetics in the energy sector

October 1st, 2018

The opportunities for geosynthetics in energy applications are nearly endless. There are huge energy categories, such as oil, natural gas and coal, but geosynthetics also play a role in nuclear energy, hydropower, wind power and solar power, among others. Geosynthetics line storage tanks, support roads to remote sites, line tailings ponds, provide filtration, dewater coal […]

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Multilinear drainage geocomposites to filter oil sands tailing slurries

October 1st, 2018

Mining and some energy operations generate large quantities of water-containing tailings. These tailings are made of crushed-rock particles that are deposited in a slurry form. This is the case for coal, tar sand, lead, zinc, gold, silver, copper, molybdenum, nickel, taconite (iron), phosphate, bauxite (aluminum oxide), uranium, trona (soda ash) and potash, for example. There […]

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The GMA Techline

October 1st, 2018

Toxicity of nonwovens? Q: Are there any comprehensive tests (or a general synopsis) of the environmental toxicity of leachate from nonwoven polypropylene fabrics when aged in a freshwater or saltwater solution? Regulatory and municipal bodies in Europe and New Zealand are requesting more info about products that are used in riparian and coastal environments. A: […]

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From Our Readers: Woven monofilament geotextile for glacial soils?

October 1st, 2018

To the editor: Regarding your article “Springtime Failure of a Cold-Climate Geotextile Riprap Slope” in the June/July issue of Geosynthetics magazine, I believe woven slit film (WSF) fabrics are inappropriate as “filter fabric” for subsurface drains or beneath hard armor in erosion control applications. WSF have insufficient porosity, percent open area and permeability to relieve […]

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Barry R. Christopher honored with 2018 Koerner award and lecture series

September 11th, 2018

The Geosynthetic Materials Association (GMA), led by a Koerner awardee selection task force, selected Barry R. Christopher, Ph.D., P.E., as the recipient of the 2018 Dr. Robert M. Koerner Award and Lecture Series. The award and lecture series is named for Dr. Robert M. Koerner, Ph.D., the founder and director emeritus of the Geosynthetic Institute […]

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The GMA Techline answers all

August 1st, 2018

UV Weathering of Geotextiles Q: My firm is providing construction quality assurance services for a landfill cell expansion. We are having an issue with our contractor and are going to be in a position of having 8 ounces/square yard (271 g/m2) of nonwoven geotextile exposed for a period of time, which exceeds the seven-day limit […]

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