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GCLs and slope stability

April 1, 2008

From the GMA Techline Subject: GCLs and slope stability — I’d like to find out what the current thinking is on designing for slope stability with GCLs … perhaps summarize the current stateof- the-practice regarding residual strength of reinforced GCLs used in bottom liners at landfills. (Myron, Washington) Reply: Of course, there are ongoing tests …

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Geocomposite cover for sulfide tailings

February 1, 2008

By Bruno Herlin, P.Eng. Abstract In autumn 2006, the Ontario Ministry of Northern Development and Mines tendered a construction project to provide a soil cover over the North Impounded Tailings (NIT) area at the abandoned Kam Kotia Mine site in east-central Ontario, Canada. The soil cover would effectively impede the entry of water and oxygen …

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Using geosynthetics to rehabilitate Fisher Cañon Dam and Reservoir

August 1, 2007

Installation of a reservoir liner restored more-efficient irrigation to a Colorado resort By Richard A. Millet, P.E., Jennifer L. Williams, P.E., Dennis A. Minchow, John B. Heap Introduction Fisher Cañon Reservoir is an off-channel storage facility that supplies irrigation water to the golf courses at the legendary Broadmoor Resort near Colorado Springs, Colo. The Fisher …

Use of geosynthetics in the mining and mineral processing industry

By Karin Renken, David Mchaina, Ernest Yanful Introduction This article gives a brief overview and a summary of the results of research work conducted under the 2003 North American Geosynthetics (NAGS) Award of Merit. The NAGS awards were initiated in 1989 as an industry sponsored program to recognize excellence in the state of the art …

Background and most recent GRI standards

By Bob Koerner In the 1980s, while supervising graduate research students in their geosynthetics theses topics, the issue of writing generic and standardized procedures arose in this (quite new at the time) geosynthetics field. Rob Swan generated our first formalized test methods with what became GRI-GG1: “Geogrid Rib Tensile Strength” (now ASTM D6637) and GRI-GG2: …

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Use of geosynthetics in deicing facilities at the Cleveland airport

June 1, 2007

Using GCLs and a cellular confinement system, the objective was todesign and construct a centralized deicing pad where fluid could beapplied and collected in a fully controlled manner. By Daniel Petno and Chris Athanassopoulos Introduction The design and construction of a new centralized deicing facility at Cleveland-Hopkins International Airport (CLE) involved several geosynthetic applications, including …

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GCLs used for airport runways in France, containment at gold mine in Saudi Arabia

June 1, 2006

Master Drainage Plan, Line E, San Jacinto Basin One of the largest infrastructure projects in Europe in recent years has been in Toulouse, France, at the Toulouse-Blagnac Airport and the adjacent Airbus-France facility where the new Airbus A-380s are built. During the course of this construction project, hangars were built to house the wide-bodied A-380 …

Geosynthetic clay liners (GCLs)

Bonding clay to geosynthetic materials has created an economical, long-term solution for many applications. Geosynthetic clay liners (GCLs) are hydraulic barriers made of clay bonded to a single geosynthetic layer or to multiple geosynthetic layers. Because of its low permeability, swelling capacity and relative abundance, natural sodium bentonite is the preferred clay component of GCLs. …