Evaluation of geosynthetic anchor systems through pullout testing

February 1, 2018  |  Features

Anchor systems are a vital portion of any erosion control program tasked with negating the effects of erosive forces on disturbed soils. Anchor systems are typically deployed in situations where a rolled erosion control product (RECP) is to be used as the primary erosion control measure. As more REC…
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Riverbank erosion protection using engineered geosynthetics in Mexico

February 1, 2018  |  Features

The Río La Antigua is a river that flows through a low-lying region in the Mexican state of Veracruz, which has the historical importance of being one of the first regions where Hernán Cortés landed in the early 1500s. The Casa de Cortés is a popular tourist attraction, and the village of La Ant…
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A risk assessment for MSE wall projects

February 1, 2018  |  Features

During the past 40 years, mechanically stabilized earth (MSE) walls have gained wide acceptance within the public and private sectors, becoming the standard of practice for filled walls. The evolution away from the concrete cantilever wall has occurred primarily because MSE walls are less expensive …
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GMA Techline

February 1, 2018  |  Features, News, Q&A: GMA Techline

Determining quantity of recycled HDPE in a geonet Q: I have a question about high-density polyethylene (HDPE) geonets. Is it possible, by thermogravimetric analysis (TGA) and differential scanning calorimeter (DSC) analysis, to determine the quantity of recycled HDPE present in a geonet? I have a ge…
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Part 2: Controlling uplifting gas bubbles in exposed geomembrane-lined ponds

February 1, 2018  |  Features

Part 1 of this series in the October/November 2017 issue of Geosynthetics demonstrated how the size, shape, pressure, and stresses and strains experienced by geomembrane bubbles surrounded by a confining fluid could be analytically estimated. Two different field case histories exhibiting the extreme…
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Geosynthetics: To protect and conserve

December 13, 2017  |  Features

Geosynthetics are part of a flexible, cost-effective infrastructure that helps to treat, store and deliver clean water around the world. If you’ve had a glass of clean water today, you can likely thank a fabric-based product. Geosynthetics perform behind-the-scenes work to ensure communities have …
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New IFAI chairman Steve Ellington shares his vision for the Industrial Fabrics Association International

November 1, 2017  |  Features

With the geopolitical challenges and opportunities the specialty fabrics industry faces, we, as an association, need to make sure that we continue to educate our members and provide them with opportunities,” says Steve Ellington, president of Trivantage LLC, Glen Raven’s distribution and marketi…
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GWFV walls and slopes

October 1, 2017  |  Features

New patented technology is available to construct geosynthetic wrap-face vegetated (GWFV) retaining walls and reinforced soil slopes using a pyramidal-woven, high-performance turf reinforcement mat (HPTRM) in conjunction with fiber-composite internal braces. This wrap-face system eliminates the need…
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Part 1: Controlling uplifting gas bubbles in exposed geomembrane-lined ponds

October 1, 2017  |  Features

There is a substantial legacy of literature devoted to the design, construction and operation of geomembrane-lined ponds, with perhaps the best and most complete reference being 34 years old by Giroud (1983). Even with this long history, there continue to be problems and failures with lined ponds. O…
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The durability of exposed geomembrane covers

October 1, 2017  |  Features

The most frequently asked question by people in the geosynthetics world is how long is the anticipated lifetime of geosynthetics. So much so that of the more than 3,000 questions submitted to the GMA Techline since it began in 2004, 591 (19.7%) have been on lifetime, aka durability. Of these, 49% we…
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