Ground improvements using geofoam: A case history

October 14th, 2020

By Javaid M. Alvi, Ph.D., and Jahangir J. Kabir, Ph.D., P.E The project site is a triangular-shaped property located at the intersection of Raleigh Avenue and West Liberty Avenue in the Borough of Dormont, Allegheny County, Pa. (Figure 1). The site housed two Nissan buildings, one with a showroom at the top floor and the […]

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A geosynthetic wrap-face vegetated wall system

October 1st, 2020

For highway embankment construction  By Stanley M. Miller and Drew Loizeaux A recent creek enhancement project to facilitate the passage of bull trout in Pend Oreille County of northeastern Washington state required removal of a 6-foot (1.8-m) diameter concrete culvert (Figure 1), realignment of a well-traveled county road and a new 58-foot (17.7-m) span bridge. […]

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Innovative geosynthetic solution saves 106-year-old Panama Canal structures

August 1st, 2020

By Tom Stephens and Nicolas Ruiz FIGURE 1 Preparing to place a 65-cubic-yard (50-m3) geotextile bag container into 66 feet (20 m) of water at the Gatun Locks dividing wall The Panama Canal opened for business 106 years ago and was hailed as the eighth wonder of the world and an engineering marvel. It has […]

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U.S. Bank Stadium geosynthetic reinforced stress relief wall

February 1st, 2020

Design, construction and fire damage mitigation By Nathan M. Lichty, Stephan M. Gale and Timothy P. Bendell Demolition of the Hubert H. Humphrey Metrodome stadium in Minneapolis, Minn., occurred in 2014 and subsequent construction of U.S. Bank Stadium (Figure 1), the home of the Minnesota Vikings and host of the 2018 Super Bowl, occurred between […]

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Overcoming expansive soils with Tensar’s TriAx Geogrid

November 13th, 2019

Expansion: it’s a win for communities when roads reach out and connect people to business, resources and formerly rural areas. But another form of expansion—soil that expands when water is added and shrinks when it dries out—can thwart this progress by making it hard to economically build and maintain long-lasting roads. “Expansive soil” is in […]

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Panorama

April 1st, 2019

GMA honors U.S. senator as ‘leader of the year’ The Geosynthetic Materials Association (GMA) honored Sen. Sheldon Whitehouse, D–R.I., with the GMA Leader of the Year Award during the fall Lobby Day in Washington, D.C., on Nov. 14, 2018. “I’m honored to be recognized in this way by the Geosynthetic Materials Association,” Sen. Whitehouse said, […]

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Tenax presents GRAVEL LOCK, a composite for retaining gravel

March 21st, 2019

Italian company Tenax’s new product GRAVEL LOCK is a geocomposite made up of a cuspated, rolled high-density polyethylene geogrid coupled with a polypropylene nonwoven fabric. It is ideal for creating draining and stable gravel floors for pedestrian and vehicular passage, the shape in rolls and the reduced amount of gravel required for filling (less than […]

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Highway deep-patch geogrid applications

June 1st, 2018

Deep patch is a repair technique that has been widely used on low-volume roads in the Pacific Northwest as a cost-effective mitigation technique to address settlement and shallow landsliding of side-cast embankment fill slopes and natural slopes consisting of weak soils overlying stronger soils (Cuelho et al. 2012). A deep patch consists of a subexcavation […]

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Geogrid study initiative wins Center for Transportation Research Award

March 15th, 2018

The University of Minnesota Center for Transportation Studies (CTS) selected Tensar International and its partners the winners of the 2018 CTS Research Partnership Award for their work on geogrid usage in paved road infrastructure, Tensar International said in a press release. The award recognizes a new pavement design and analysis tool, which enables geogrid benefits […]

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GMA Techline

August 1st, 2017

Liner repair? Pullout tests? Sewn seams? Shear strength of sludges? Geomembrane liner repair Q: I have a facility that has submitted liner repair documentation for the repair of a high-density polyethylene (HDPE) liner for a leachate/stormwater pond at an industrial landfill site. The repairs were performed using either a patch or, for indentations and small […]

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