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PVC geomembrane specifications for South American lithium mining
June 1st, 2022
FIGURE 1 A covered pond with a PVC geomembrane (left) that complies with Fabricated Geomembrane Institute (FGI) specifications. A second pond (right) is already filled with lithium brine. Lithium, one of the raw materials in various batteries, is the element powering the technological revolution over the past 30 years that has led to people having […]
A new specification for geotextile grout filled mattresses
April 1st, 2021
By George R. Koerner FIGURE 1 GGFM being filled incrementally. Courtesy of HUESKER Geotextile grout filled mattresses (GGFM), also referred to (in ASTM D18.25/D35.05) as fabric-formed concrete (FFC) or fabric-formed concrete revetments (FFCR), are erosion-resistant concrete linings made from durable, permeable fabric forms that are filled with high-strength grout. GGFMs are generally sloping structures placed […]
IGS releases new edition of the ‘Guide to the Specification of Geosynthetics’
August 9th, 2018
The International Geosynthetics Society (IGS) has released the fifth edition of the “Guide to the Specification of Geosynthetics.” The objective of this document is to be a generic guide and aid to those writing geosynthetic specifications. The guide will provide information that is useful to those who use specifications, buyers of geosynthetics and installers. The […]
QA/QC for geosynthetics in waste containment is focus of GSI course
June 26th, 2018
The Geosynthetic Institute (GSI) will host an online course entitled “Course 1: Quality Assurance/Quality Control of Geosynthetics in Waste Containment Facilities,” Oct. 16–18, 2018, from 11 a.m. to 12:30 p.m. and from 2 p.m. to 3:30 p.m. EDT each day. Robert M. Koerner and George Koerner will teach the course. This is the first GSI […]