Stabilizing Oyster Lake’s outfall

February 1, 2021

Preserving a unique ecosystem with an environmentally friendly solution By Drew Loizeaux Coastal dune lakes are freshwater lakes located within 2 miles (3.2 km) of an ocean coastline. These rare ecosystems are only found in a handful of locations around the globe, including Madagascar, New Zealand, Australia and Walton County, Fla. Walton County is home …

The business of geosynthetics goes on during COVID

This is the show issue for the Geosynthetics Virtual Conference 2021, coming up February 22–25. In addition to the two features, you will find in this issue the Geosynthetics Product Showcase, highlighting a plethora of new and existing products and services from companies, some of whom will be exhibiting at the conference’s virtual show floor. …

The Geosynthetics Conference has gone virtual

You are reading the show issue of Geosynthetics magazine. Whether you have just received this at home in print or are browsing through the issue online, we can’t wait to welcome you to the Geosynthetics Virtual Conference 2021.  A wide variety of ways to learn and connect While you are attending the Geosynthetics Virtual Conference …

Members Only  

Comparative analysis of the flow and filtration capabilities of sediment retention devices—Part 1

By James E. Sprague and C. Joel Sprague Sediment retention devices (SRDs) include silt fences, wattles, filter logs, compost socks and various types of stormwater inlet protectors and are a widely used best management practice (BMP) to provide sediment filtration from stormwater runoff while allowing water passage. However, SRD performance varies greatly in flow rate …

Kanai Resort shoreline protection and beach creation

The Kanai Resort shoreline protection project had three distinct phases utilizing sand-colored geotextile tubes. The first phase was to install a natural-appearing shoreline protection structure with a height of 8.2 feet (2.5 m) to protect the entire 1 mile (1.7 km) of the resort shoreline. Next, three 656-foot (200-m) long offshore breakwaters were installed, located …

Chair’s corner and GMA happenings

By Bryan Gee As we move into 2021, I hope all of you are finding renewed optimism for your businesses and your personal lives, and that you remain healthy or are regaining your health as we look forward to the waning of the pandemic. The Geosynthetic Materials Association (GMA) continues our many efforts to advance …

The GMA Techline

Moderated by George R. Koerner BIOLOGICAL DEGRADATION OF PE AND PP Q: Can you please enlighten me on the biological degradation of polyolefin polyethylene (PE) and polypropylene (PP)? A: Within the various plant forms of biological life, i.e., bacteria, actinomycetes, fungi and algae, polymer degradation is essentially nonexistent due to high molecular weight of the common …

Members Only  

Bituminous geomembranes (BGM) for ponds in mining

By Natalie Daly and Bernard Breul  Bitumen has emerged as a standard 20th-century waterproofing material in civil and water engineering in the form of bituminous concrete, asphalt and bituminous geomembranes. The first applications of bituminous geomembranes (BGM) were in France in 1975 near Grenoble and for potable water storage reservoirs at a 6,562-foot (2,000-m) altitude …

Premier Product Showcase 2021 offers first look at new products and services

Here is your first look at some of the new products and services that will be available from companies in 2021.  Geosynthetics Virtual Conference 2021 is co-locating with the IECA Annual Virtual Conference and Expo. The 2021 virtual show floor will bring together exhibitors covering the gamut of geosynthetic products and services. Registrants for the …

Extreme direct shear testing

By George R. Koerner The Geosynthetic Institute (GSI) is doing direct shear testing under extreme environmental conditions (i.e., specifically extreme temperatures). At the prompting of two member companies, we have initiated an effort in this regard. This work looks at response curves over a wide range of normal pressures, 0–43.5 psi (0–300 kPa). The work …