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COMANCO completes Crystal Lagoon lining in southwest Florida
November 24th, 2021
By David Ramirez, project engineer, COMANCO Crews lining the lagoon with a white LLDPE geomembrane. Photograph courtesy of COMANCO A COMANCO crew led by Superintendent Alejandro Loza has completed a Crystal Lagoon geosynthetics installation in Bradenton, Fla. The COMANCO lagoon liner consisted of smooth and textured 80-mil (2-mm) linear low-density polyethylene (LLDPE) white geomembrane. Overall, […]
Erosion control using concrete-enhanced synthetic turf
February 1st, 2020
By Bradford H. Cooley and Bryan Scholl Concrete-enhanced synthetic turf (CEST) is a hardened revetment system best described as a fiber-reinforced, flexible concrete liner. It consists of a high-friction, impermeable geomembrane layer overlain by an engineered synthetic turf, which is infilled with a 5,000 psi (3.45 × 107 Pa) high-strength cementitious mix. The turf fibers […]
USDOT announces $1 billion in emergency relief for road and bridge repairs
April 17th, 2018
The U.S. Department of Transportation’s (USDOT) Federal Highway Administration (FHWA) announced April 13, 2018, the release of more than $1 billion in Emergency Relief (ER) funds to help 32 states, several U.S. territories and some federal land management agencies repair roads and bridges damaged by storms, floods and other unexpected events. FHWA’s ER program reimburses […]
Part 2: The regulation of CCR in the United States: Geosynthetics and barriers
October 1st, 2017
As discussed in Part 1 of “The Regulation of CCR in the United States,” for the first time in decades, nationwide regulation of CCR (coal combustion residuals) surface impoundments expands the regulated use of geosynthetic materials. While the CCR Rule (2015) allows continued operation of existing CCR surface impoundments, it provides criteria for the disposition […]
Geosynthetic Institute News
August 1st, 2017
Commentary on geosynthetic specifications One can only suspect that the first specification on a given manufactured material came along with or very shortly after the first manufactured product became available. It follows then that some 200 years later, manufactured geosynthetic materials should do likewise. In fact, so-called standards organizations have evolved by publishing the following […]
International Geosynthetics Society North American Chapter News
June 1st, 2017
A busy Geotechnical Frontiers conference for IGS–NA The International Geosynthetics Society–North American (IGS–NA) Chapter annual meeting was held on March 14, 2017, at Geotechnical Frontiers in Orlando, Fla. Among the key items discussed at the meeting were the appointment of the 2017–2019 board of directors, winners of the IGS–NA photo contest, and the 2017 Educate […]
Geosynthetics Materials Association News
June 1st, 2017
GMA honors Dr. Robert M. Koerner and Dr. George Koerner On March 14 in Orlando, Fla., the Geosynthetic Materials Association (GMA) hosted the inaugural Robert M. Koerner Award and Lecture Series. Established by GMA in 2016, the award and lecture series is given to an individual who has had a measurable impact on the geosynthetics […]
Geosynthetics Institute News
June 1st, 2017
Robert M. Koerner on his namesake award and lecture series On March 14, 2017, at the Geotechnical Frontiers conference in Orlando, Fla., George Koerner graciously accepted the Robert M. Koerner Award and Lecture Series. The biennial award and lecture series were established by the Geosynthetic Materials Association (GMA) Executive Council; Koerner was the first recipient. […]
Are zero leaks with installed geomembranes possible?
June 1st, 2017
Abigail Gilson-Beck and Glen Toepfer step into a geosynthetics minefield in this issue of Geosynthetics with their article “Achieving zero leaks on a budget,” a goal that is controversial in the industry. Whether this goal should even be an objective is the question the debate hinges on. A spirited discussion on this issue arose during […]
In the classroom: Part 1: Learning about civil engineering technology
June 1st, 2017
Introduction This article is the first of a four-part series in Geosynthetics magazine on how an engineering student or practicing engineer is able to learn about geosynthetic materials. These articles are based on a panel discussion session on March 13, 2017, at the Geotechnical Frontiers conference in Orlando, Fla. Part 1 addresses the topic of […]