Geopipe Webinar to Examine Durability, Infrastructure Uses, and More

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UPDATE: IGS North America will move the webinar to the fall, due to interested attendee requests but difficulty arranging time during a very busy season of work. IGS North America will host a geopipe webinar on July 12. The session, led by Dr. Michael Pluimer (University of Minnesota – Duluth), tackles one of the most necessary elements of modern infrastructure. Pluimer is targeting the engi... »

Pluimer to Lead July 12 Geopipe Webinar for IGS North America

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The next IGS North America webinar will tackle one of the most necessary elements of modern infrastructure: geopipe. Dr. Michael Pluimer (University of Minnesota – Duluth) will lead the session, which is broadly targeted as an Introduction to Geopipe. The webinar will open a longer-term series on applications, specifications, and test methods associated with geopipe. Commonly offered in corr... »

Cold Weather Watch: Rapid Crack Propagation in Geomembranes

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By Ian D. Peggs and Chris Kelsey – Low temperatures, fast-dropping temperatures, and strong winds can provide the ideal conditions for rapid crack propagation (RCP)—“shattering”—in exposed high-density polyethylene geomembranes. The return of what’s called the “Polar Vortex” in the United States and Canada has brought these conditions with atypically low temperatures occurring quickly. (Editor’s N... »

GSI White Paper 32 on HDPE Geomembranes

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The Geosynthetic Insitute (GSI) has accomplished a lot internationally with its generic specifications, often filling a void in or setting the stage for ASTM or ISO standardization developments in geosynthetics. One of the most significant specifications released by GSI’s Geosynthetic Research Institute is the GRI-GM13 Specification for HDPE Geomembranes. GSI White Paper 32, released early this ye... »

Eliminating Geomembrane Stress Cracking

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By Ian D. Peggs ** Can geomembrane stress cracking (SC) be eliminated altogether? Probably not. But it can still surely be reduced if we understand its causes a little better. Can SC be eliminated altogether? Probably not. But it can still surely be reduced if we understand its causes a little better. We have made great improvements (specified NCTL times from 200 to 1000 hr) since the 1980s when t... »