Geoelectric Liner Survey Equipment and Expertise in Australia

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After performing geoelectric liner leak location and integrity surveys worldwide since about 1985 and teaching others how to do so since 2004, Dr. Ian D. Peggs, P.E., P.Eng. (I-CORP INTERNATIONAL Inc.) reports that he has sold his survey equipment to Tom Seymour of Terra Firma Laboratories in Melbourne, Australia. The transfer occurred during what was Dr. Peggs’s fifth trip to Oz in 2017. During t... »

Geosynthetics CQA Workshop at Australian Landfill Conference

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During the 7th Australian Landfill and Transfer Stations Conference, a one-day CQA workshop will be held with a focus on construction quality assurance (CQA) for geosynthetic liners. These barrier systems are vital to the long-term performance and environmental security of waste management installations. The CQA conducted on site ensures that these systems go into operation in ideal condition to b... »

Top Stories in Geosynthetics for 2016

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As promised, we reveal here today (December 29) the top stories in geosynthetics for 2016 on Geosynthetica. The stories have been ranked by most read, with the further caveat that the story must have been published in 2016. (There are a few exceptions noted at the end of older stories that actually cracked the top 15 for this year despite they having been published in previous year’s on the ... »

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... »

What Will Be Geosynthetica’s Most-Read Articles for 2016?

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As the year comes to a close, we take a closer look at the analytics to see how users have interacted with the site and to gauge our most-read articles. Readers do not interact with all content, of course. As expected, they focus on their particular areas of engineering interest. That might be a sector of engineering (e.g., transportation, coastal protection), a type of information (e.g, an abstra... »

SURVEY: Extra-Wide Geomembranes

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I-CORP International’s Dr. Ian D. Peggs, P.E., P.Eng has shared a survey on extra-wide geomembranes. Your participation is invited. Responses are sought from manufacturers, distributors, installers, construction/contracting firms, design engineers, etc. The information gathering project aims to initially assess the market potential for 11.6m-wide, seamless panels of polyethylene and polyprop... »

10 Geomembrane Questions

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Questioning the practice of engineering has long been part of the geosynthetics field. It is this on-going dialogue and re-evaluation that leads to new manufacturing innovations, better CQA, more economical and more sustainable designs, and much more. Here, we present geomembrane questions, as contributed by Dr. Ian D. Peggs, P.E., P.Eng of I-CORP INTERNATIONAL: We install high-density polyethylen... »

Panelists Sought for Liner Installation Session

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During EuroGeo 6 (25 – 28 September 2016) in Istanbul, Turkey, Dr. Ian D. Peggs will moderate a panel discussion on “Managing Wrinkles, Bridging, and Ballasting during Geomembrane Liner Installation.” Interested contributors are encouraged to contact Dr. Peggs. The format for the session will involve six 5-minute presentations followed by an hour of group discussion with the audience. ... »

I-CORP Marks 25 Years of Geosynthetics Consulting

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By Ian D. Peggs – On 21 March 2016, I-CORP will celebrate 25 years of geosynthetics consulting, with particular emphasis on geomembranes, pipes, and other engineered plastic components and materials. In January 1991, I left Geosyntec/Geoservices in Florida to develop a geosynthetics division with Greg Richardson at ENSCI in High Point, North Carolina. That division, however, was shut down in March... »

Cambridge Brings Graphene Closer to Geosynthetics

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In August, Dr. Ian D. Peggs, P.E. wrote about the strong potential for graphene in geosynthetics. Layers of graphene could give materials strength exceeding steel, enable self-repairing qualities, and impart an electrical conductivity greater than copper. “Nanogeocomposites,” Peggs wrote, “are the wave of the future.” Cambridge University may help make that ambitious prediction come to... »

Graphene and the Next Generation of Geosynthetics

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By Ian D. Peggs – Geosynthetic materials and products continue their steady development, as additive packages and manufacturing technologies evolve. Today, however, is different. Today, we are truly on the verge of a significant leap in geosynthetic performance. The enabler? Graphene. That single layer of carbon atoms has a specific strength higher than steel. It is self-repairing and has higher e... »

Last Chance to Join Special Sessions at Geosynthetics 2015

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Geosynthetics 2015 will be held 15 – 18 February 2015 in Portland, Oregon. Today (April 15) is the final day to submit abstracts to the conference’s technical sessions. Ian Peggs of I-CORP INTERNATIONAL reminds readers that there are two exceptional opportunities to contribute to sessions at the conference: “Critical Applications of Geosynthetics” (high walls, critical cont... »

Australia: Peggs Headlines Jan/Feb Liner Seminar Series

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Geofabrics Australasia has confirmed dates and speakers for the multi-city geosynthetic liner seminar series it is sponsoring across Australia in January and February 2014. Dr. Ian D. Peggs, P.E., P.Eng, of I-CORP INTERNATIONAL has been announced as the key speaker. Dr. Peggs is an international expert on liner testing, failure analysis and geosynthetic materials R&D; and he has been a leading... »

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... »

Geomembrane Spark Testing and Difficult Installation Points

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"When asked what voltage setting was used to perform spark testing on a pipe penetration weld the operator said “Dunno, I just turned it to the max as stated in the instructions”! This is just the right way to miss leaks, as happened..." Ian Peggs of I-CORP INTERNATIONAL takes a look at what is occurring during spark testing. »