Understanding Geomembrane Asperity

April 1, 2023  |  Q&A: GMA Techline

Q: Twice in the past few weeks colleagues asked me the same question about geomembrane asperity, so I come to you to understand it. 
Strip or Sheet Drain Vs. French Drain

April 1, 2023  |  Q&A: GMA Techline

Q: What are benefits to using “strip or sheet drain” over conventional French drain construction with soils?
Geosynthetics for Precipitate Clogging

April 1, 2023  |  Q&A: GMA Techline

Q: We are retrofitting a highway edge drain where rubberized concrete was used as the base course layer. What type of geotextile or geosynthetic should we consider for this project’s drain?
Dewatering Bags for Erosion and Sediment Control

April 1, 2023  |  Q&A: GMA Techline

Q: How does a dewatering bag (Dirt Bag, sediment container, Siltsack, etc.) work on a construction site to help you with your erosion and sediment control plan?
FHWA launches Geosynthetic Installation Notes Tracker mobile application

April 1, 2023  |  Update

The Federal Highway Administration (FHWA) Center for Local Aid Support, in a collaborative effort with the Geosynthetic Materials Association (GMA), has launched the Geosynthetics Installation Notes Tracker mobile application. The mobile app provides handheld, quick and easy access to information on…
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Motorway underpass using geomembranes as a groundwater barrier

April 1, 2023  |  Features

In some places in the Netherlands, there is an absence of natural clay so groundwater flushes easily through the soil. As soon as excavation starts, groundwater will be present. Groundwater must be removed or taken care of to build roads, tunnels, etc. in dry conditions. This article describes a tec…
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GCL and geosynthetic membrane installation for mining site

April 1, 2023  |  Features

Nestled in the Midas Trench lineament on the northwest side of the Humboldt Range, numerous mines take full advantage of their proximity to the basin and ridge frontal faults that serve as conduits for gold-bearing hydrothermal fluids. In 2020, CETCO was contacted by a mine in this region to assist …
GMA moves forward

April 1, 2023  |  GMA News

Over the past decade the Geosynthetic Materials Association (GMA) has grown by leaps and bounds, establishing itself as a leading geosynthetics organization in the areas of education, technical support and government relations. GMA’s membership has nearly doubled since 2005; GMA-supported educatio…
Sustainability comes natural to the erosion and sediment control industry

April 1, 2023  |  ECTC News

Sustainable materials are the central part of the erosion control industry and the Erosion Control Technology Council (ECTC). ECTC is a leading industry organization home to top manufacturers of erosion and sediment control products, component suppliers, material distributors and test laboratories. …
Testing for tensile properties of geosynthetic straps

April 1, 2023  |  GSI News

The Geosynthetic Institute (GSI) now has a revised test method for determining the tensile properties of geosynthetic straps. They are an extremely strong reinforcement element for mechanically stabilized structures. These soil reinforcing elements consist of high-strength extensible geosynthetic re…