Syntec announces new geogrid products

October 13, 2011  |  Products

Biaxial and uniaxial without patent infringement, company says In an Oct. 12 press release, Baltimore-based Syntec Corp. announced its introduction of a new line of integrally formed biaxial and uniaxial geogrids: Syntec SBX biaxial geogrids—polypropylene (PP) using punched and drawn technolog…
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Geonet composite for Red Willow Dam

October 4, 2011  |  Products

The U.S. Bureau of Reclamation (BR) has awarded a $15.3 million contract to SEMA Construction Inc. for rehabilitation of the Red Willow Dam in south-central Nebraska. Problems at the dam have been a concern since discovery of a sinkhole and cracking through the dam’s embankment in 2009. SEMA, …
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Reduced CO2 emissions and energy consumption with geosynthetic installations

October 1, 2011  |  Products

From the Geosynthetics Research Institute’s 24th conference, 2011.The articles in this series encompass all types of geosynthetics and their applications viewed from the context of sustainability. Traditional solutions are compared with geosynthetic solutions from both cost and carbon footprint pe…
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Liner questions

October 1, 2011  |  Products

From the GMA Techline RE: Liner questions I am designing a surface impoundment with interior side slopes of 1.5H:1V. This impoundment requires (per regulations) a geosynthetic clay liner (Bentomat DN or equivalent), 40-mil HDPE secondary liner, and 60-mil HDPE primary liner. A leak-detection system …
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Comparing GCLs

October 1, 2011  |  Products

From the GMA Techline RE: GCLs I need some assistance in comparing two geosynthetic clay liners for a project where the specification gives a total bentonite mass required of 4500g/m2 and a target hydraulic conductivity of < 5 × 10-11. We have an option of a liner that far exceeds the requi…
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Pond liner

October 1, 2011  |  Products

From the GMA Techline RE: Pond liner We have some air pockets under the geomembrane as the pond fills with water. Rather than try to cut and patch the flexible membrane liner (FML), would it not be easier to simply leave the anchor trench unfilled in those areas to “burp” the air out up …
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Fabricated geomembranes and cold weather

October 1, 2011  |  Products

By Andrew Mills One of the key advantages of fabricated geomembranes is the ability to take large sheets into the field to minimize field welding. Nowhere is this more important than in cold or wet weather. As winter moves in, installation conditions can deteriorate rapidly from rain, snow, and cold…
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Tensar wins patent cases against Chinese infringers

September 23, 2011  |  Products

<h2 class="kicker"Tensar International Corp. issued the following press release Sept. 22 International ground stabilization specialist, Tensar, has successfully defended its TriAx product range against several Chinese patent infringements. The TriAx geogrid—patented in many countr…
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Propex offers new barrier fabric

September 15, 2011  |  Products

A Sept. 14 press release has introduced a new product from Geotextile Systems by Propex—Geotex Orange Barrier Fabric, a nonwoven, polypropylene geotextile designed to protect utility and water lines and contaminated soil areas from digging. As with Propex’s black geotextile fabric, the G…
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Auburn inventors receive patent

September 7, 2011  |  Products

Dave Elton, former NAGS president, is among the foursome to devise geotextile fabrics with electronic antenna capabilities The invention Auburn University in Auburn, Ala., has been assigned a patent developed by four co-inventors for “reinforcement fabrics with electronic transmission capabili…
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