Bituminous geomembranes on a French dam

April 1, 2018  |  Features

La Galaube Dam, an International Commission on Large Dams (ICOLD) facility in the south of France, completes the hydraulic system of the Montagne Noire area and provides a total water storage capacity in excess of 283 million cubic feet (8 million m3). To supply potable water to three counties and 1…
Reviving the Palos Verdes Reservoir—Part 2

April 1, 2018  |  Features

The October/November 2016 issue of Geosynthetics published Part 1 of this series on revitalizing the Palos Verdes Reservoir in Los Angeles County, California. That article described the approach to revitalizing the site, as well as the five-month-long geosynthetic manufacturing and fabrication phase…
Controlling uplifting gas bubbles in exposed geomembrane-lined ponds—Part 3

April 1, 2018  |  Features

Part 1 of this series (Thiel 2017) demonstrated how the size, shape, pressure, and stresses and strains experienced by geomembrane bubbles inflated with gas could be analytically estimated. Part 2 of this series (Thiel 2018) evaluated the considerations for incorporating a gas-venting underdrain bel…
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…
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…
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 …
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…
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…
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 …
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…