Containment

Raven Industries, Inc. (NASDAQ:RAVN) is expanding its fabrication services eastward. The company has announced a site in Waynesboro, Virginia. The new location supports Raven’s Engineered Films Division in providing faster...

After 40+ years of geosynthetic materials performance consulting work, Dr. Ian D. Peggs has made a strategic decision to close I-CORP INTERNATIONAL, Inc. for the foreseeable future and to...

The 2013 Geo-Congress from ASCE's Geo-Institute be held 3-7 March 2013 in San Diego, California. The broad theme of the 2013 Geo-Congress has been announced as the "Stability and Performance of Slopes and Embankments," a theme that encompasses all aspects of the geo-profession--and one that certainly utilizes geosynthetics. Learn more about the conference and submit your abstract by 17 April 2012. Learn more here.;

The Geo-Institute of ASCE's annual congress offers an exceptional opportunity to interact with the international geotechnical engineering community on some of the most pressing topics. Geo-Congress 2012 will be held in Oakland, California 25-29 March 2012. The theme of the event is "State of the Art and Practice in Geotechnical Engineering" and some noted engineers with a geosynthetics background (Craig Benson and David Daniel) will deliver two of the three big lectures: the Ralph B. Peck and Karl Terzaghi Lectures.

The annual geo-congress of the Geo-Institute of ASCE is being held in West Palm Beach, Florida right now. This is an almost unfairly convenient location for Geosynthetica, as we are headquartered in West Palm Beach (about 1 mile from the conference site). Last night, the exhibit hall opened with a reception for GeoFlorida attendees. Elizabeth Peggs has posted some photos from the exhibit hall opening.

GeoFlorida 2010, the annual geo-congress of the Geo-Institute of ASCE, will be held 20-24 February 2010 and will present a broad perspective on new developments in geotechnical engineering analysis, modeling and design. Technical topics will crosscut all areas of the profession, such as stability analysis, geoenvironmental engineering, and case histories. The deadline for abstracts has been extended to 24 April 2009. Download the Call for Papers in PDF.

Following news that Ian Peggs, founder of Geosynthetica, is retiring from I-CORP International (though not retiring completely from geosynthetics), we thought we'd look back on some of his most...

GeoU 2022 combines expert geosynthetics instruction with exceptional networking. This in-person engineering professional development event will take place 5 - 8 April 2022 at the Sonesta Bee Cave Austin...

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...

In the latest addition to our GeoAmericas series of stories, we look back at the GeoAmericas 2016 project story of how Groupe Alphard utilized electrical leak location (ELL) surveys...

In mid-2019, Clockspring|NRI acquired Milliken Infrastructure Solutions (MIS). Both companies had large portfolios with infrastructure repair-related technologies, such as pipe wrap and sleeves, epoxies, and geosynthetic cementitious composite mats...

For 15+ years, engineers have come to Austin, Texas in April to attend geosynthetics CQA training courses hosted by TRI Environmental. This year, some are wondering where this well-respected...

The International Erosion Control Association’s (IECA) annual Environmental Connection conference will gather February 16 – 19 in San Antonio, Texas. Geosynthetica will be in the international exhibit hall in...

As the calendar year winds down, professional development opportunities such as engineering webinars are utilized more. For some, these sessions provide needed PDHs. For others, it is...

The geotechnical engineering professional development website Geo-U (www.geo-u.com) has added two presentations from Drs. JP Giroud and Jie Han to its roster of high-quality, on-demand education. A third presentation...

Geo-U (www.geo-u.com) é um novo serviço que oferece palestras previamente gravadas de alguns dos mais renomados especialistas em geossintéticos. Em sua estréia o serviço disponibiliza 12 palestras do Dr....

The GeoAmericas 2016 transportation engineering track will hold paper presentation sessions on April 11 and 12 at the Loews Miami Beach Hotel on South Beach. These sessions will present...

Australia-based Global Synthetics has released its latest edition of GeoNews, a regular publication that highlights geosynthetic projects and affiliated engineering and construction issues within the company’s markets. The October...

The 1st Edition of the "DPC Geosynthetics Market- UK 2009-2013" provides a review of the structure of the damp proof course, damp proof membrane, and geomembrane markets. This niche report focuses on market size and trends, product mix, supply, distribution and future prospects. Some of the companies included: Anderson Monarflex, British Polythene Industries, Grafton Group, Hyload, Icopal, Jewson, Marley Waterproofing, Monarflex acoustic, Permanite, Plysolene, Ruberoid, SIG, Spectraroof, Travis Perkins, Visqueen Building Products, Watts Group, Wolseley. Learn more here.;

It’s Tuesday and attendees and exhibitors are arriving in Salt Lake City, Utah for the biennial Geosynthetics conference. Geosynthetics 2009, managed by the Roseville, Minnesota-based Industrial Fabrics Association International (IFAI), is being held under the theme “Hydraulic and Environmental Engineering,” two subjects key to Western states like Utah. Geosynthetica is a cooperating organization for this year’s event. We’re proud to be part of this seminal gathering for North America’s geosynthetics practice. Reports from the conference will be published daily (Wednesday – Friday, February 25-27) and a wrap-up will be published next week.

geosynthetica's Tech Note series publishes concise questions and observations from the practice. The latest, "Are you testing the reinforcement or the polymer?" comes from frequent contributor Ian Peggs of I-CORP INTERNATIONAL. His question is important, for the durability and degradation of the polymer is just as important to a material's service life suitability as its reinforcement component.

Periodic in-service measurements--including high pressure oxidative induction time, carbonyl index (FTIR), and stress cracking resistance--should provide a few years advance warning of exposed high-density polyethylene (HDPE) and polypropylene (PP) liner end-of-life (EOL), thereby preventing unexpected very expensive catastrophic liner failures.

Whales (bubbles above the water level) in a lined wastewater pond are usually caused by leaking water that cannot be removed, which in turn generates methane that also cannot be removed. Minimize leakage through the liner (there will inevitably be some), provide a functioning leakage removal (monitoring) system, and a functioning gas venting system. A nonwoven geotextile alone under the geomembrane is not sufficient to do this.

Liner designers and regulators should note that it is NOT possible to perform a geoelectric integrity or leak location survey on a double geomembrane lining system when there is only a geocomposite in the leakage detection system (LDS) between the two geomembranes unless the LDS is backfilled with water. This can be costly, time-consuming, and even damaging to the liner if it is uplifted. Additional ballast on the liner may be required. And side slope liners cannot be tested. Plan ahead and use conductive geomembrane, or place a conductive geotextile or a geosynthetic clay liner (GCL) directly under the primary geomembrane.

Ian Peggs has written a tech note about the consistency and specification of textured geomembrane, a concern expressed at the recent GRI-19 conference by both a geomembrane manufacturer (Boyd Ramsey, GSE) and a CQA firm (Mark Sieracke, STS) - the general consensus being that asperity height is not sufficient to assure adequate interface shear properties.