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Sediment: in the bag

November 1, 2010

Construction activities in watery environments stir up sediments that can release stored pollutants; clog waterways; and are expensive to store, treat or remove. Blue Boar Contracts, Midlands, England, had a national dredging contract with British Waterways to deepen canals—and extract tons of sediment slurry for removal. The company called on Sedi-filter, a dewatering solution manufactured …

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TenCate patents ‘grassy’ geosynthetic

October 1, 2010

TenCate Geosynthetics, Pendergrass, Ga., recently received a U.S. patent for its Miramesh® SG woven geosynthetic, which combines the benefits of its Miramesh GR open biaxial fibers with green synthetic grass fibers. The product, designed to stabilize soil on steep slopes and wire basket walls, immediately creates a finished, fully vegetated-looking wall face and eliminates the …

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TenCate introduces MiraSpec software for flexible pavement designs

September 14, 2010

TenCate Geosynthetics North America has introduced Internet-based MiraSpec Design Solutions Software, an easy-to-use software program to assist engineers in flexible pavement design, while demonstrating the benefits of using TenCate Mirafi® RS580i woven reinforcement and stabilization geotextile in roadway structures. The program will allow pavement designers to perform AASHTO (American Association of State Highway and Transportation …

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Geogrid reinforces stone columns

September 1, 2010

“Energy. Experiment. Experience,” a conference held by Bauhaus University Weimar’s Department of Civil Engineering, featured the first public test of stone columns reinforced with Secugrid® geogrid, manufactured by NAUE GmbH & Co. KG, Espelkamp-Fiestel, Germany. As the audience watched and television cameras rolled, professor Karl Josef Witt of Bauhaus University and his team constructed four …

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ASTM paves the way for geotextiles

August 1, 2010

When geotextiles are used to reinforce the base layers of flexible pavement, the interaction between the fabric and aggregates is important, as is the tensile property of the geotextile. The American Society for Testing and Materials (ASTM) has developed two new standards pertaining to these important features. ASTM D7499, Test Method for Measuring Geosynthetic-Soil Resilient …

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Solar landfill covers coming to market

June 1, 2010

The first solar landfill cover, which integrated solar collection strips into a geomembrane to collect energy, was a success, so waste management firm Republic Services Inc., Phoenix, Az., has transferred its patent pending to Carlisle Energy Services to develop and market the innovation. Tessman Road Landfill in San Antonio, Texas, used the cover to generate …

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U.N. funds jute projects in India, Bangladesh

The United Nations established the Common Fund for Commodities (CFC) as a financial entity supporting projects in developing countries, and the CFC awarded two million dollars to a five-year project to develop jute geotextiles in India and Bangladesh. The raw materials are plentiful and renewable, and jute geotextiles control soil erosion, biodegrade, enhance soil nutrition …

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Report shows rising demand for geosynthetics

May 1, 2010

Infrastructure development and construction in Russia, China and India will drive global demand for 6.9 billion square yards of geosynthetic fabric by 2015, according to a report by Global Industry Analysts Inc., San Jose, Calif. The research report, “Geosynthetics: A Global Strategic Business Report,” bases its conclusions on the success of geosynthetics in enhancing durability …

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Geotextile tubes provide hurricane protection for Cancun beach

{TenCate™ Geosynthetics} Pendergrass, Georgia, U.S.A. Cancun on the Caribbean coast is the most important beach resort in Mexico and famous worldwide for its magnificent beaches. In 1988 Hurricane Gilbert destroyed the natural balance of the area, modifying the offshore sand banks and damaging the famous beaches, which have since had severe erosion problems. In 2005 …

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Target Center retrofitted green roof

{Tecta America Corp.} Skokie, Ill., U.S.A. The Target Center in Minneapolis, Minn., retrofitted the first green roof on an arena and the largest extensive green roof on an existing building in the world. The 2.5-acre project will capture about a million gallons of storm water, preventing its runoff into the nearby Mississippi River. It’s also …