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GMA history, Part 2
June 1st, 2020
During the Geosynthetics CASE STUDIES Conference in March in North Charleston, S.C., a few of the past Geosynthetic Materials Association (GMA) leaders had an opportunity to address the gathering and recall their personal experiences and achievements when they chaired the GMA executive council. This is the second installment of the history of GMA. Beginning in […]
GMA history and happenings
April 1st, 2020
By Andrew Aho Throughout the history of geosynthetics, leaders have emerged who have significantly affected the growth of the industry in North America. During the Geosynthetics CASE STUDIES Conference in March in North Charleston, S.C., a few of the Geosynthetic Materials Association (GMA) leaders had an opportunity to address the gathering and recall their personal […]
Tensar to host webinar on separation materials
February 19th, 2020
Tensar Corp. will sponsor a webinar, “Maintaining Separation of Fine-Grained Soils,” on Feb. 27, at 1 p.m. EST. The options available to the designer for maintaining the integrity of granular fill layers which are placed over fine-grained soils to provide a stable surface will be discussed. Multiple design approaches are available for addressing this common […]
Repairing an oil well platform with a geogrid reinforced soil slope
October 1st, 2019
By Jeff A. Segar The Mormon Butte site is in the Little Missouri National Grassland in the Badlands region of western North Dakota (Figure 1). Constructed in 1985 and leased through the U.S. Forest Service, the pad elevation was created by cutting into the side of the butte and depositing the spoils at a 1H:1V […]
Get listed in the Geosynthetics 2020 Specifier’s Guide
September 16th, 2019
The annual call for listings in the Geosynthetics 2020 Specifier’s Guide opened September 16. Thousands of companies, engineers and government agencies turn to this annual guide to purchase products and services. This comprehensive resource lists suppliers of geotextiles, geomembranes, geogrids, geosynthetic clay liners, drainage materials, geocells and erosion control materials, as well as services related […]
A minitube blanket for landfill gas collection and containment
August 1st, 2019
By Stephan Fourmont, Pascal Saunier and Toraj Ghofrani Landfill gas (LFG) is produced during the decomposition of putrescible material in landfills. Often referred to as biogas, LFG is a source of odors and fugitive greenhouse gas (GHG) emissions. LFG is typically 40%–60% methane, which is 25 times more potent to affect climate change than carbon […]
Geogrid reinforced soil structures reach new heights
June 1st, 2019
By Sachin Mandavkar and Mehari Weldu FIGURE 1 U.S. Route 460 RSS during construction Reinforced soil structures are geotechnical systems consisting of reinforcing elements and primarily include mechanically stabilized earth (MSE) walls and reinforced soil slopes (RSS) (Figure 1). MSE walls and RSS are constructed by placing alternating layers of reinforcement and compacted soil behind […]
Streambank restoration using engineered bank stabilization
June 1st, 2019
By Jeffery T. Hoilman and Stanley M. Miller FIGURE 1 Mountain Creek streambank restoration—September 2018. View looking upstream nine months after installation. Mountain Creek flows through the community of Red Bank near Chattanooga, Tenn., to the Tennessee River. Mountain Creek has been identified by the Tennessee Department of Environment and Conservation (TDEC 2018) as a […]
Using geosynthetics in flexible airport pavements
June 1st, 2019
By Benjamin Mahaffay, Jeremy Robinson, Jeffrey Gagnon and Gregory Norwood FIGURE 1 Post-test excavated cross section In recent years, there has been an increasing interest to improve pavement structures through mechanical stabilization by incorporating geosynthetic products within the structure. The Geosynthetic Materials Association (GMA) has identified eight categories of commercially available geosynthetics: geotextiles, geogrids, geonets, […]
TenCate launches geotextile continuous moisture management system
April 2nd, 2019
Moisture is the enemy of roadway and civil structure durability. It accelerates the deterioration of assets and increases the financial loss and risk for everyone. Unchecked, the challenges brought about by moisture drain time, money and resources that could otherwise be used to fund new projects. In 2011, TenCate Geosynthetics initially launched Mirafi® H2Ri woven […]