Member Spotlight: May

Nortène began its activities in Brazil in 1981, pioneering the supply of plastic polyethylene screens, tarps for construction industry, and agricultural films. With an entrepreneurial spirit, Nortène has expanded and strengthened its share on Brazilian market. The company commercializes its products throughout Brazil and abroad and it is experiencing a period of continuous growth, by increasing its products portfolio and modernizing its quality laboratory. Nortene manufactures products for the following markets: construction, infrastructure, environmental engineering, industry, agribusiness, irrigation, mining, sugar/ethanol, warehousing and silage. Nortene produces HDPE or LLDPE geomembranes in blow or flat die machines, according with the project specifications. Its laboratories are accredited by GAI LAP and all the customers receive a complete quality certificate with technical information from each roll delivered. For more information on Nortene, please contact Mrs. Lima at export@nortene.com.br or visit www.nortene.com.br.

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FGI Publishes article in Geosynthetics Magazine titled, “Long-term Durability of Geomembrane Material and Seams”

The Fabricated Geomembrane Institute (FGI), in collaboration with the Minnesota Department of Natural Resources (Minn. DNR), has been conducting a study assessing the long-term durability of PVC geomembranes. Samples of three different 30-mil PVC geomembranes were placed at the bottom of a settling basin near the northern Minnesota town of Hibbing in October 1995 with the intention of extracting samples for testing after 2, 4, 5, 10, 20, 25, and 30 years. This update showcases the results from the first 20 years of the program. This ongoing project is investigating the 30-year durability of PVC geomembranes, PVC chemical fusion, and hot-wedge–welded seams. Three 30-mil geomembranes from three different manufacturers were placed at the bottom of a double-lined water treatment settling basin at a Minn. DNR field research site in Hibbing in October 1995. The extreme weather fluctuations and harsh winters with annual freeze/thaw cycles in Hibbing provided an excellent place to really test the durability of the materials.

To view the complete article from the April/May issue of Geosynthetics, click here

Steve Koski (left) and Austin Dusek (right), both with the Minnesota DNR, and Timothy D. Stark (center), University of Illinois, uncovering the PVC geomembrane sample.

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