Testing wind-resistant geosynthetics

October 1, 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 …

Full schedule now available for Geosynthetics Conference 2021

Registration for the Geosynthetics Conference 2021 is now open, and the full schedule is available online. The time has come to start booking your travel, making plans to attend the sessions that have caught your eye and mapping out which booths you will visit. Visit www.geosyntheticsconference.com to view the full program and peruse the list …

IGS-NA cosponsors Tailings and Mine Waste 2020 conference

The North American Chapter of the International Geosynthetics Society (IGS North America) board is pleased to announce our cosponsorship of the virtual Tailings and Mine Waste 2020 conference, Nov. 15–18, 2020. This conference carries a strong geosynthetics short course and technical track focused on geosynthetic applications in mill tailings and mine waste. The Tailings and …

Distinctive uses of geosynthetics

This issue of Geosynthetics takes a look at bridges, drainage/coal combustion residuals and highways/geosynthetic wall systems. It’s a diverse issue showing the breadth of geosynthetics applications. Patricia Guerra-Escobar’s “Reinforced embankments for the causeway for a North Wales bridge project” examines the use of geogrids in the replacement of a 160-year-old bridge in the U.K. “CCR …

Mechanically stabilized earth wall with simulated tablets as facade

By César Roldán Acosta The strategic geographical location of the state of Mexico forces a constant interaction with the economic activities of Mexico City. For this reason, it is critically important to keep the roads linking several towns throughout the state in good condition. The Secretaría de Comunicaciones y Transportes (SCT) directs the strategies for …

Chair’s corner and GMA happenings

Chair’s corner By Bryan Gee I am honored and humbled to assume the responsibilities of chair of the Geosynthetic Materials Association (GMA) executive council. During my time as an active participant in GMA, the organization has been fortunate to have the excellent leadership of Boyd Ramsey, Keith Gardner and Fred Chuck as chairs, and we …

The GMA Techline

Moderated by George R. Koerner Puncture after NDT Q: I would like your opinion on the fate of punctures in the air channel leftover from nondestructive air channel tests (NDTs), specifically in regard to sealing the air channels to prevent leachate or water ingress. We are particularly concerned with this situation on a landfill cover …

A geosynthetic wrap-face vegetated wall system

For highway embankment construction  By Stanley M. Miller and Drew Loizeaux A recent creek enhancement project to facilitate the passage of bull trout in Pend Oreille County of northeastern Washington state required removal of a 6-foot (1.8-m) diameter concrete culvert (Figure 1), realignment of a well-traveled county road and a new 58-foot (17.7-m) span bridge. …

CCR landfill final cover test pad—Part 2

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 …