George Koerner, Director of the Geosynthetic Institute, had the honor this year of delivering the first Koerner Lecture—a series named in honor of his father Dr. Robert Koerner, who is internationally recognized as one of the godfathers of geosynthetics and who continues his work as Director Emeritus at GSI. Last year, I had the pleasure to see both Koerners at an ASCE’s GeoChicago conference and joined them, many of their family members, and a few engineers in a 3-mile pre-conference run. It was in its way emblematic of what George and Bob bring to geosynthetics: absolute energy and engagement and a drive to get people to move together.
In his lecture, George focused on a topic that the Geosynthetic Institute has monitored and studied for many years: exposed geomembrane performance. We spoke during the Geotechnical Frontiers 2017 conference in Orlando.
GeoTalk is published on Tuesdays. Recent episodes:
- July 11: Pullout Anchor Testing in Erosion and Sediment Control
- July 5: Effective Education for Erosion and Sediment Control System Adoption
- June 27: Leap Frog Ideas for Low Impact Development
- June 20: The Geotechnical Poetry of Mary Nodine
- June 13: Robert Bowers on Geosynthetics in Segmental Concrete Pavements
- June 6: Craig Benson on Sedimentation, Dams, and Watershed Health
EXPOSED GEOMEMBRANE PERFORMANCE
“Exposed cover performance is really done well with polyolefin performance,” George Koerner says.
He cites the performance of facilities in Florida, which have even endured hurricane hits and survived (without suffering all of the soil erosion one would expect from a soil-covered cap).
“To get the geomembrane to last for the 30-year post-closure period is within our reach even in the harshest environments,” he says. “There are design challenges for that, but we can overcome them.”
One of the advantages in the exposed cover market, he notes, is that a business already exists for evaluating and pricing in whether to replace a system, or how a facility could be eventually be mined and material recycled before a “final cover” is set in place.
Landfills remain the most important market, but there remain additional opportunities for coal combustion residual and construction and demolition facilities or various Subtitle C installations.
It was, as always, a joy to talk with George. GSI’s team reminds us constantly that each of us should be interested in what we do and who we work among. Don’t pass up the opportunities we have to contribute, to recognize the contributions of those around us, and to keep getting better.
For information on the Geosynthetic Institute’s work, monthly webinars, accreditation services, white papers, short courses, and more, visit www.geosynthetic-institute.org.
MORE STORIES ABOUT EXPOSED GEOMEMBRANE PERFORMANCE
- 13-Year Study of Exposed Green Geomembrane Cover
- Earth Anchors for an Exposed Geomembrane Cover
- Report from Berlin 2 Workshop on Exposed, HDPE Geomembrane Covers