PODCAST: George Koerner on Exposed Geomembrane Performance

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George Koerner, Director of the Geosynthetic Institute, had the honor this year of delivering the first Koerner Lecture—a series named in honor of his father Dr. Robert Koerner, who is internationally recognized as one of the godfathers of geosynthetics and who continues his work as Director Emeritus at GSI. Last year, I had the pleasure to see both Koerners at an ASCE’s GeoChicago conference and ... »

SWANA Publishes Alternative Final Cover Report

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“The utilization of alternative final cover systems is an area of growing interest among landfill owners who want to avoid the problems that are associated with traditional final cover systems,” writes the Solid Waste Association of North America. “The acceptance of state regulators of these alternative systems is a key issue in their future consideration and deployment.” In a new report, SWANA of... »

Cold Weather Watch: Rapid Crack Propagation in Geomembranes

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By Ian D. Peggs and Chris Kelsey – Low temperatures, fast-dropping temperatures, and strong winds can provide the ideal conditions for rapid crack propagation (RCP)—“shattering”—in exposed high-density polyethylene geomembranes. The return of what’s called the “Polar Vortex” in the United States and Canada has brought these conditions with atypically low temperatures occurring quickly. (Editor’s N... »

13-Year Study of Exposed, Green Geomembrane Cover

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By Boyd Ramsey – In the summer of 2001, a 60- mil high-density polyethylene (HDPE) green geomembrane was installed as a cap at the Polk County Florida solid waste disposal facility (The North Central Sanitary Landfill Class 1 Disposal Area). This cap covers approximately 4 hectares (16 acres) of surface area on a mass of waste with a relatively flat top surface and benched side slopes with an angl... »

Lifetime Predictions of Geosynthetics Webinar

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Interest in the topic of lifetime predictions for geosynthetics has grown substantially as project records extend beyond 40 years. Research projects on material service life continue to be tracked. And, test methods on geosynthetic durability are enhanced each year. The  Geosynthetic Institute (GSI) makes this topic–lifetime predictions–the subject its next GSI Webinar, to be held Augu... »

Interview: Koerner on Lifetime Predictions for Geosynthetics

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Dr. Russell Jones, President of the International Geosynthetics Society, sat down with the Geosynthetic Institute‘s Dr. Robert Koerner to discuss GSI’s 12-year study on the long-term performance and aging of geotextiles and geomembranes, with a focus on the applicability of the research for lifetime predictions. The interview took place in April in Miami during GeoAmericas 2016, the 3r... »

Geosynthetics for Earth Day 2016

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Geosynthetics are helping substantially reduce the carbon footprint of construction, securing the environment, and extending the economical and environmental performance of infrastructures. As Earth Day 2016 is marked around the world, we look at some of the geosynthetics and applications that are helping create a more sustainable world. Geosynthetics have helped infrastructures achieve: Longer ro... »

Earth Anchors for an Exposed Geomembrane Cover

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Maryland Environmental Service (MES) owns and maintains the Midshore Regional Solid Waste System in a region that serves 140,000 residents on the eastern shore of Maryland’s Chesapeake Bay. The 175 acre (708,200m²) Midshore I closed in 2010 after 20 years of successful operation. MES chose to cap the landfill with an Exposed Geomembrane Cover (EGC). The EGC system, which utilizes Platipus Pe... »

A Stronger Load Transfer System for Geocells

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The release of Presto Geosystems‘ new ATRA® Tendon Clip is providing enhanced load transfer strength for geocell installations. The clip has been designed to transfer slope gravitational forces from for their GEOWEB® geocell walls to tendons. The innovation is a natural extension to the well-known ATRA® key from the company, and this new device incorporates the same “turn and lock” capabilit... »

Advances and Trends in Containment Technologies

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On April 10, GeoAmericas 2016 will feature a half-day short course on Current Advances and Trends in Containment Technologies. The session will be led by Dr. Timothy D. Stark (University of Illinois), who will be joined by Allan Breitenbach (AB Engineering), Gary Zych (AEP), Andrew Mills (Layfield), Sam Allen (TRI/Environmental), and Daren Laine (Leak Location Services). GeoAmericas 2016 is the 3r... »

Mining: Geosynthetic Ballast System Protects Primary Liners

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HUESKER has announced the availability of its SoilTain® Protect geotextile system for the international mining community. The patent-pending geosynthetic ballast mattress is constructed of interwoven geotextile tubes to form homogenous panels. These durable mattresses can, in most instances, be filled with site soils or wastes, thereby offering a beneficial reuse option for site materials and redu... »

Solar Landfills Returning with Geosynthetic Barriers

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The geosynthetics field had a brief foray into system-based, solar energy-generating landfill covers (2009 – 2012), but the waste management market was not fully ready for such a change. Still, the economic advantages of exposed and alternative capping systems (vs. traditional, thick, soil-covered caps) and the long-term performance indicators meant that it would probably not be too long before so... »

GSI Webinar Focuses on Lifetime Prediction of Geosynthetics

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By Robert Koerner – The Geosynthetic Institute (GSI) will hold its first webinar of 2014 on Wednesday, January 8, from 11:30 am – 1:00 pm (EST). This monthly webinar series is held every second Wednesday of a month. GSI members enjoy discounted attendance. The January 8 topic focuses on the lifetime prediction of geosynthetics, including both exposed and non-exposed materials. A FREQUENT QUE... »

GSE Unveils High Temperature Geomembranes

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With new content on its international website and an email campaign, GSE Environmental has unveiled high temperature geomembranes. DOWNLOAD: New brochure (PDF) From the initial promotion for GSE High Temperature Liner: ** Prolonged exposure to temperatures above 60°C (140°F) can have a negative effect on standard polyethylene geomembranes. When the temperature exceeds 60°C, stress cracking, oxidat... »