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Testing wind-resistant geosynthetics
October 1st, 2020
By George R. Koerner As you can see by Figure 1, we are experiencing a new age of geosynthetics. Over the past 15 years, we have seen a propensity of polymeric materials left exposed to rather than covered from the environment. This is in large part due to the strides geosynthetic manufacturers and polymer formulators […]
CCR landfill final cover test pad—Part 2
October 1st, 2020
By Nina J. Balsamo, John Massey-Norton, John R. Klamut, Terry Queen,Charles F. Straley and Mark R. Lehner FIGURE 1 Test pass of loaded 45-ton (40.8-tonne) truck over 3 feet (0.9 m) of cover soil on bench An integrated drainage system (IDS) geomembrane, which provides both a low-permeability membrane and drainage space above the geomembrane, is […]
GSI announces GSI Fellowship awardees
September 29th, 2020
The 2020–21 Geosynthetics Institute (GSI) Fellowship proposals have been reviewed by Dr. George Koerner, Dr. Grace Hsuan and the GSI Board of Advisors (BOA). GSI is pleased to announce that the recipients of this year’s $5,000 awards have been chosen. As in previous years, the candidate must be either pursuing a master’s or doctoral degree […]
GSI to host webinar on lifetime predictions of geosynthetics
September 17th, 2020
The Geosynthetic Institute (GSI) will sponsor a webinar, “Lifetime Predictions of Covered and Exposed Geosynthetics,” on October 14, from 11:30 a.m. to 1 p.m. EDT. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. A most frequently asked question regarding all types of geosynthetics […]
GSI to host webinar on landfill covers
September 2nd, 2020
The Geosynthetic Institute (GSI) will sponsor a webinar, “Landfill covers: Past-present-emerging,” on October 7, from 11:30 a.m. to 1 p.m. EDT. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. Participants will be able to assess past landfill cover practices and gain comparisons to […]
GSI to host webinar on geosynthetic applications used in heap leach mining
August 24th, 2020
The Geosynthetic Institute (GSI) will sponsor a webinar, “Geosynthetics applications used in heap leach mining,” on September 23, from 11:30 a.m. to 1 p.m. EDT. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. The chemical extraction of precious metals from low-grade ore and […]
GSI hosts geomembranes in hydraulic applications webinar
August 12th, 2020
The Geosynthetic Institute (GSI) will sponsor a webinar, “Geomembranes in hydraulic applications (dams, canals, reservoirs, tunnels, pipes),” on September 16, from 11:30 a.m. to 1 p.m. EDT. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. By 2040 it is estimated that two billion […]
GSI to host webinar on failed MSE walls
August 10th, 2020
The Geosynthetic Institute (GSI) will sponsor a webinar, “A database and analysis of 320 failed MSE walls with geosynthetic reinforcement,” on September 9, from 11:30 a.m. to 1 p.m. EDT. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. Mechanically stabilized earth walls, berms […]
Benefit/cost analysis as it relates to service life of geosynthetics
August 1st, 2020
On the surface, performing a benefit/cost (B/C) analysis is a straightforward process. However, ensuring that such an analysis is accurate and thorough is a much more nuanced task. In 2008, Bob Koerner laid out the procedure for geomembranes in Geosynthetic Research Institute (GRI) White Paper #12 “GS Selection Based on B/C Ratio.” This article expands […]
CCR landfill final cover test pad—Part 1
August 1st, 2020
By Nina J. Balsamo, John Massey-Norton, John R. Klamut, Terry Queen,Charles F. Straley and Mark R. Lehner An integrated drainage system (IDS) geomembrane, which provides both a low-permeability membrane and drainage space above the geomembrane, is being used in the final cover at a coal combustion residuals (CCR) landfill in West Virginia. Part 1 of […]