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Geomembranes with better performance
February 1st, 2023
Q:We are researching liner alternatives for an industrial client that will have lined impoundments subject to high temperature influent (>140 degrees F), low pH (1 SU+/-), and may have organic contaminants. Are there any polyethylene geomembranes that meet these requirements? A: Thank you for your question about geomembranes with better performance than GRI GM13 GMB […]
How to install a liner in a large pond
August 25th, 2021
An AGRU HDPE geomembrane installed in Tulfes, Austria. Photograph courtesy of AGRU Austria Ponds are useful in a variety of functions, serving in processes such as water treatment, thermal storage, farming and more. Regardless of their function, one of the most important considerations in pond design is containment. Containment is often handled through compacted clay […]
Bituminous geomembranes (BGM) for ponds in mining
February 1st, 2021
By Natalie Daly and Bernard Breul FIGURE 1 RUSAL Alumina clarifier pond bituminous geomembrane (BGM) liner, Ireland Bitumen has emerged as a standard 20th-century waterproofing material in civil and water engineering in the form of bituminous concrete, asphalt and bituminous geomembranes. The first applications of bituminous geomembranes (BGM) were in France in 1975 near Grenoble […]
Methods to estimate pressures and strains in pond geomembrane bubbles
August 1st, 2020
By Richard Thiel, Hesham Eldesouky and Richard Brachman FIGURE 1 Bubbles in pond with 60-mil (1.5-mm) HDPE geomembrane on verge of bursting This article provides an update, validation and improved approach for predicting the shape, pressure and strains that can occur in an exposed geomembrane bubble (aka “whale”) created by gas trapped below the geomembrane […]
GSI to host webinar on pond liners, GMA members get discounted rates
December 18th, 2018
The Geosynthetic Institute (GSI) will sponsor a webinar “Pond Liner Design and Performance,” on Jan. 10, 2019, from 11:30 a.m. to 1 p.m. EDT. GMA member companies and their employees receive discounted rates on all GSI webinar and short course registrations. The first ponds lined with geomembranes were installed in the 1930s. That said, the […]
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 […]
A next-gen basin liner solution for the U.S. Army Corps of Engineers
April 1st, 2018
There are more than 100,000 miles (> 160,000 km) of levees throughout the United States, protecting lives and property from extreme weather-related flooding. Aging infrastructure and increasingly stronger storms have intensified the need to reinforce and protect levees, and emergency responders need solutions to repair a breached levee before it results in catastrophic damage. Therefore, […]