Hybrid geosynthetic clay liners for attenuation of PFAS in landfill leachates

October 1, 2021  |  Feature

An exponential increase in understanding of the provenance, migration, and fate of per- and polyfluoroalkyl substances (PFAS) is evident over the past decade. The environmental and health concerns from this group of contaminants are well recognized, but they are still evolving with advancing studies…
Energy industries use HDPE liners for flowback water evaporation/recycling ponds

October 1, 2021  |  Case Studies, Feature

The problem to be solved is the disposal and recycling of millions of gallons of production water (brine water) and flowback water annually generated from the oil and gas industry in an environmentally safe, less costly and efficient manner. A technology that is effective and safe is the evaporation…
IFAI Expo: The industry in person

September 1, 2021  |  Feature

Celebrate textile innovation—in person!—at IFAI Expo, the leading show in the textile industry for sourcing, education and networking. Join thousands of industry stakeholders on the show floor, in valuable education sessions and at long-awaited social gatherings. Reconnect with your industry and…
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Koerner Lecture: Geosynthetic-reinforced column-supported embankments: Improving practice with better theory

August 1, 2021  |  Feature

This article summarizes the third Dr. Robert M. Koerner Lecture given by the author at the 2021 Geosynthetics Virtual Conference.
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Geosynthetic portable cofferdams for civil construction applications

August 1, 2021  |  Feature

Cofferdams are an enclosure built within or across a body of water to allow the enclosed area to be dewatered. This creates a dry working environment so construction can be carried out properly and safely. Typical cofferdams are welded-steel structures consisting of sheet piles, wales or cross brace…
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Dewatering of sludge from a sewage treatment plant with geotextile tubes

June 1, 2021  |  Case Studies, Feature

Water is an important resource for people’s quality of life and is indispensable for several uses, including desedentation. However, this resource is finite and available in small quantities in the quality of fresh water, at liquid state and on the surface. Therefore, rivers and lakes, providers o…
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NPA geocell for railway line repair in permafrost region

June 1, 2021  |  Case Studies, Feature

Churchill is a port city located on Hudson Bay in northern Manitoba, Canada. The nearest roadhead village of Gillam is 156 miles (252 km) south. Hudson Bay Railway (HBR), the only mode of land transport to Churchill, was completed in 1929. This single-line railway track has served the northern port …
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Design of reinforcement geosynthetics in landfill piggyback expansion

June 1, 2021  |  Case Studies, Feature

An operator at a nonhazardous waste storage facility proposed extending the facility’s life, within the existing perimeter, by vertically expanding the cells in operation to a maximum thickness of waste of 52.5 feet (16 m). This project is based on nonhazardous waste storage cells 49.2-feet (15-m)…