GMA 2024 second-quarter highlights

July 1, 2024  |  GMA News

The Geosynthetic Materials Association (GMA) has been actively engaged in advancing the geosynthetics industry during the second quarter of this year. Let’s take a closer look at some key updates.
Geotechnical Frontiers short course preview

July 1, 2024  |  Events, Geotechnical Frontiers Watch, News

Geotechnical Frontiers will offer a variety of short courses on Sunday, March 2, 2025. These in-depth courses feature detailed instruction in a small group setting. All courses provide four to eight PDH credits and require a separate registration. Don’t see what you are hoping for? Check out the w…
Navigating landfill leachate requirements with geosynthetics

July 1, 2024  |  Features

How vital is landfill leachate management? Recent guidance from the U.S. Environmental Protection Agency (EPA) on the disposal of PFAS shows that leachate management is one of the core functionalities of a modern landfill—and perhaps one of its biggest selling points moving forward.
Liner system selection for leakage and performance

July 1, 2024  |  Q&A: GMA Techline

Q: We recently relined an aeration pond at a POTW with a 45 mil GRI GM-30 barrier. It was successfully lined for 30 years with a 45 mil CSPE (Hypalon®) liner that was, unfortunately, punctured and torn beyond repair by a fallen tree from outside the fence line. The relined surface impoundment curre…
Avoid geotextile damage from oil spill cleanup

July 1, 2024  |  Q&A: GMA Techline

Q: We are a riverfront landowner with a significant 25-foot (7.6 m) riprap slope protecting our property from erosion and scour. There is a woven monofilament geotextile filter under the riprap to stop the embankment soil from piping into the river. This system has worked well for the past 10 years,…
Direct shear machine testing

July 1, 2024  |  Q&A: GMA Techline

Q: We just bought a direct shear machine and want to start ASTM D5321 testing. The pneumatic piston applying the vertical loads for normal pressure has a range from a low of 1,124 pounds to a high of 20,000 pounds. Can we use this direct shear box for landfill cover testing?
GCL shear strength concerns

July 1, 2024  |  Q&A: GMA Techline

Q: We are worried about the midplane shear strength of our GCL in a seismically active zone of our landfill. The GCL is a single component of a double composite liner system. It is backing up the primary geomembrane in the upper composite liner system. Should we be concerned?
New chapter for geosynthetics

July 1, 2024  |  Editorial

With this issue, Geosynthetics magazine begins a new journey. The Geosynthetics staff has spent the last year talking to our readers to find out what they like about the magazine and how we can improve. Working with the editorial advisory board, industry leaders and knowledge experts, the Geosynthet…
AASHTO issues new concrete bridge guidebook

June 28, 2024  |  News

The American Association of State Highway and Transportation Officials (AASHTO) recently released a new publication: “Resources for Concrete Bridge Design and Construction, 1st Edition.” Developed through a collaboration between AASHTO and the National Concrete Bridge Council, this publication c…
Solmax biogas cover eliminates 23,000 tonnes of annual CO2 emissions

June 27, 2024  |  News

JBS Australia has completed the construction of a bioenergy system at its Scone beef processing plant in New South Wales, Australia, eliminating the equivalent of 23,000 tonnes of carbon dioxide emissions per year. The bioenergy system was activated in May, capturing wastewater emissions to utilize …