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Geosynthetics use expands in mining and ore processing
August 1st, 2018
The estimated value of nonfuel mining of raw materials in the United States alone totaled $75.2 billion in 2017, according to an annual report by the U.S. Geological Survey (USGS). Everything from aluminum to zinc falls into this massive category, but that dollar figure is dwarfed by the USGS’s estimate in that same report of […]
The GMA Techline answers all
August 1st, 2018
UV Weathering of Geotextiles Q: My firm is providing construction quality assurance services for a landfill cell expansion. We are having an issue with our contractor and are going to be in a position of having 8 ounces/square yard (271 g/m2) of nonwoven geotextile exposed for a period of time, which exceeds the seven-day limit […]
Deploying a geosynthetic mattress ballast layer at an ore-processing site
August 1st, 2018
New applications of geosynthetics are being found that form from overlaps of existing functions, such as protection, separation, filtration and drainage. One new geosynthetic product, the geosynthetic mattress ballast layer (GBL), was first implemented for an ore-processing waste facility protection application in 2015. The GBL is a geotextile containment system that provides a tubular component […]
Testing a new method for mining-waste storage using polymer-enhanced geosynthetic clay liners
July 31st, 2018
Geosynthetic clay liners (GCL) and polymer-modified geosynthetic clay liners (PMG) are gaining favor for use in industrial waste disposal and ore-processing applications (Athanassopoulos et al. 2015, Donovan et al. 2016a, Donovan et al. 2016b). The GCL or PMG can be a component of a composite liner system that will allow for increased performance (relative to […]
GSI’s Robert M. Koerner to host webinar on geotextile filters
June 23rd, 2018
The Geosynthetic Institute (GSI) will sponsor a webinar entitled "Geotextile Filters: Concerns and Issues," on July 11, 2018, from 11:30 a.m. to 1 p.m. EDT. The webinar will be hosted by Dr. Robert M. Koerner. This is the first GSI webinar for which all GMA member companies and their employees will receive discounted rates on webinar […]
Cirtex video spotlights geotextiles in coastline protection
June 21st, 2018
Cirtex, in Kopu, Thames, New Zealand, released a video on June 19, 2018, that showcases geotextiles used for filtration and erosion protection in coastline seawalls. Narrated by Cirtex civil and geotechnical engineer Michael Sorensen, the three-minute video takes the camera down below the boulders in seawalls to examine both properly specified geotextiles and improperly specified […]
Flowrox introduces all-in-one geotextile filtration and dewatering unit
June 18th, 2018
On June 11, 2018, Flowrox Oy, headquartered in Lappeenranta, Finland, launched the Flowrox Geobag™, an all-in-one roll-off geotextile filtration and dewatering unit that consists of Flowrox’s high-performance Packaged Pumping System™ and the company’s LPP-T transfer pump to ensure chemical dosing ability and high-performance pumping. The product is watertight with a drain valve that enables closed […]
GSI to host webinar on geotextile tubes
June 11th, 2018
The Geosynthetic Institute (GSI) will sponsor a webinar entitled “Applications and Design of Geotextile Tubes,” on Wednesday, June 13, 2018, from 11:30 a.m. to 1 p.m. EDT. Geotextile tubes are large factory-fabricated textile tubes with multiple access ports for introduction of infilled material, which is usually dredged and in slurry form. After an overview, a […]
GeoDallas Watch: 2018 GeoDallas schedule announced
June 1st, 2018
June World Environmental & Water Resources Congress June 3–7 | Minneapolis, Minn. Hosted by the Environmental & Water Resources Institute (EWRI) of the American Society of Civil Engineers (ASCE), the World Environmental & Water Resources Congress brings together the top environmental and water resources infrastructure professionals. Topics include erosion and sediment control, numerical modeling, hydraulic […]
Monitoring the performance of Louisiana’s first GRS–IBS bridge
June 1st, 2018
Over the decades, soil mass reinforced by layers of geosynthetics has been used widely and successfully in a variety of earth structures, such as mechanically stabilized earth (MSE) retaining walls, embankments, slopes and shallow foundations. Due to the proven benefits of geosynthetic reinforced soil (GRS), including cost-effectiveness, simple and fast construction, and tolerance of differential […]