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 […]
GSI hosts QA/QC of geosynthetics online course
September 28th, 2017
The Geosynthetic Institute (GSI) will offer an online course entitled “QA/QC of Geosynthetics in Waste Containment Facilities,” Oct. 3–5, 2017, from 11 a.m. to 12:30 p.m. and 2 p.m. to 3:30 p.m. EDT each day. This course focuses on the quality assurance/quality control (QA/QC) of geosynthetics placed in permanent or critical applications. The course will emphasize […]
GSI offers webinar on failed MSE walls with geosynthetics
September 25th, 2017
The Geosynthetic Institute (GSI) will offer a webinar entitled “A Data Base and Analysis of 301 Failed MSE Walls with Geosynthetic Reinforcement,” on October 11, 2017, from 11:30 a.m. to 1 p.m. EDT. Mechanically stabilized earth (MSE) walls, berms and slopes with geosynthetic reinforcement have been developed since the 1970s, first using geotextiles and later […]
GSI offers webinar on geosynthetics in erosion control
September 6th, 2017
The Geosynthetic Institute (GSI) will offer a webinar on “Geosynthetics in Erosion Control,” on September 13, 2017, from 11:30 a.m. to 1 p.m. EDT. The estimated cost of landslides in the United States is $2 to 5 billion; worldwide, it may approach $10 billion. The many landslides triggered by surface erosion is a major contributor […]
The Geosynthetic Institute announces 2017–18 fellowships
August 15th, 2017
The Geosynthetic Institute (GSI), with the guidance of the GSI board of directors, announced their fellowship awards for the 2017–18 academic year. The program recognizes and supports outstanding students from around the world studying geosynthetics. The GSI fellowship program includes candidates pursuing a master’s degree or a doctoral degree. The amount for each fellowship recipient […]
GSI offers webinar on sand drains, wick drains and geotextile sand columns
August 1st, 2017
The Geosynthetic Institute (GSI) will offer a webinar on “Sand Drains-to-Wick Drains-to-Sand Columns,” on August 9, 2017, from 11:30 a.m. to 1 p.m. EDT. This webinar will begin with Terzaghi’s work (extended by Barron) leading directly to consolidation of saturated soils using the technique of sand drains. It then describes a case history failure resulting […]
Part 1: The regulation of CCR in the United States: Geosynthetics and barriers
August 1st, 2017
The regulation of coal ash (coal combustion residuals or CCR) has significantly expanded the market for geosynthetics within the United States. Further, there is interest in these regulations around the globe in every country using coal as an energy source. These regulations are the result of recent environmental incidents. The regulations call for the increased […]
GMA Techline
August 1st, 2017
Liner repair? Pullout tests? Sewn seams? Shear strength of sludges? Geomembrane liner repair Q: I have a facility that has submitted liner repair documentation for the repair of a high-density polyethylene (HDPE) liner for a leachate/stormwater pond at an industrial landfill site. The repairs were performed using either a patch or, for indentations and small […]
In the classroom: Part 2: Geosynthetic coursework at Syracuse University, and Part 3: Geosynthetics education from IGS–NA
August 1st, 2017
Introduction This article is part of a 4-part series on how engineering students or practicing engineers learn about geosynthetic materials. Geosynthetic materials have been used in civil and environmental engineering applications for more than three decades. The benefits of geosynthetic materials are widely recognized, and they are used in a variety of industries. The high […]
Using geosynthetics for macroencapsulation for CCR on-site clean closure
August 1st, 2017
Coal combustion residuals (CCR) have been used for many years in the construction of berms and engineered structural fill applications, including embankments for highways, dikes, and levees. However, large, unencapsulated structural fill projects have become a focus of environmental concerns due to potential leaching of metals and structural failures. Cap-in-place of CCR surface impoundments is […]