The GMA Techline

August 1st, 2020

Seaming dissimilar geomembranes Q: I kindly request your technical support in the questions below: A nonpolyethylene geomembrane was used in phase 1 of the tailings dam waterproofing system of a gold mine. For the expansion (phase 2), the use of a high-density polyethylene (HDPE) geomembrane is being evaluated. How can the HDPE geomembrane join the bituminous […]

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High-strength geocell and geogrid hybrid reinforcement

June 1st, 2020

Compressor station gravel pad on soft subgrade By Sanat Pokharel, Timothy Yii, Marc Breault and Meisam Norouzi Infrastructure development in natural resources rich Alberta, Canada, often encounters very soft ground conditions that pose several construction and sustainability challenges to transportation infrastructure, such as roads, rails and pipelines. As the conventional construction practices may not always […]

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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 […]

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Geosynthetics are uniquely suited

October 1st, 2019

Geosynthetics are found in the strangest of places. But that just speaks to how versatile and useful they are for a wide variety of applications. Dewatering, energy-site closure, erosion control, reinforcement and stabilization are just a few applications that geosynthetics address in this issue. In addition, many of the geographic areas discussed here are sensitive […]

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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 […]

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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 […]

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HUESKER introduces ecoLine geogrids

July 23rd, 2019

HUESKER launched the world’s first geogrid made from 100% recycled polyethylene terephthalate (PET). With the introduction of the new ecoLine, the company is focusing on even more environmentally friendly solutions that conserve natural resources during production and offer the same quality as their conventional counterparts. The market launch starts with the HaTelit C asphalt reinforcement […]

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HUESKER releases a video of bridging sinkholes with Fortrac geogrids

June 14th, 2019

On the LGV (Ligne à Grande Vitesse, or High-Speed Line) Sud Europe Atlantique (SEA) railway line in France, a total of 2583339 square feet (240,000 m²) of Fortrac geogrid provides protection for sections with limestone soils and a high risk of karst and sinkholes. The YouTube video shows the entire laying process in just two […]

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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 […]

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Geosynthetics for reinforcement and stabilization

June 1st, 2019

Geosynthetics are widely used for reinforcement and stabilization, particularly in transportation-related applications, including base stabilization, reinforced soil slopes (RSS) and mechanically stabilized earth (MSE) walls. This issue of Geosynthetics considers many such applications from multiple viewpoints. Sachin Mandavkar and Mehari Weldu look at very tall MSE walls and RSS through several case studies in “Geogrid […]

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