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Wick drain installation considerations
October 1, 2022 | Features
Wick drains are one of the most common and cost-efficient ground improvement techniques for soft fine-grained soils. Over the years, there has been substantial development on wick drain design methods; however, construction considerations may have not been sufficiently considered during the design p…
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Geomembrane destructive testing
October 1, 2022 | Features
For almost 40 years, the generally accepted destructive test rate for geomembrane seaming has been one sample for every 500 feet (152 m) of seam. On large projects this leads to hundreds of holes cut into liners that engineers, manufacturers and installers work very hard to make leak proof. With a t…
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Drainage geocomposites and PVC geomembranes for highway tunnel lining
October 1, 2022 | Features
The original design for the primary lining system for the Driskos Twin Tunnel along the Egnatia motorway in Greece, consisting of a PVC plasticized (PVC-P) geomembrane, called for a nonwoven geotextile, 500 g/m², as a puncture protection and drainage layer.
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Geosynthetics in green roofs
August 1, 2022 | Features
To talk about geosynthetics on green rooftops is to talk about an opportunity to change and make an environmental improvement in the world. The growing need to create awareness of an ecological responsibility and the environment has allowed this concept to spread more successfully.
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Wick drain ground improvements
August 1, 2022 | Features
Construction of a large mine waste stockpile was required at the Rainy River Mine in Ontario, Canada. The mine rock stockpile foundation has up to 131 feet (40 m) thick of low to high plastic, slickensided and lightly overconsolidated clay deposits. The stockpile required foundation ground improveme…
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Reinforced soil wall with geogrids
August 1, 2022 | Features
Mechanically stabilized earth walls (MSE) are containment structures that have gained considerable popularity over the last few years due to their various benefits: constructive, environmental and economic. There are several types of reinforced earth walls, which vary according to the type of materi…
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PVC geomembrane specifications for South American lithium mining
June 1, 2022 | Features
Lithium, one of the raw materials in various batteries, is the element powering the technological revolution over the past 30 years that has led to people having exponentially more electronic devices in their lives. According to Lopez et al. (2019), lithium prices have changed dramatically in the la…
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Multi-linear drainage geocomposites for railways
June 1, 2022 | Features
In civil engineering, drainage systems are traditionally made with granular material layers and perforated collector pipes. The use of drainage geocomposites became more common 30 years ago with the development of products that met the specific requirements of each application. Moreover, the geocomp…
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Aboveground storage tank liners for energy applications
June 1, 2022 | Features
Over the past 20 years, hydraulic fracking rules and regulations have become increasingly stringent, and oil and gas (O&G) producers have become progressively more concerned with environmental stewardship. Quality, factory-fabricated geomembrane liners for the aboveground storage tank (AST) mark…