The Fabricated Geomembrane Institute (FGI) is presenting the webinar – GRI GM 34 Standard Specification: PVC-Ethylene Interpolymer Alloy Geomembranes (EIA=PVC+KEE) – on November 16, 2023 at noon CST. The presenter is George R. Koerner, Ph.D., P.E. & CQA, it is free to industry professionals and students, a 1.0 PDH is available, and you can register here. Other times to listen are November 17, 2023 at noon AEST (Pre-recorded – Australia); November 17, 2023 at noon CAT (Pre-recorded – South Africa); and November 20, 2023 at 5 p.m. JST (Pre-recorded – Japan).
This webinar will cover the specification for Ethylene Interpolymer Alloy (EIA) = (Poly Vinyl Chloride (PVC) + Ketone-Ethylene-Ester (KEE)) scrim reinforced geomembranes with nominal thicknesses of 0.76 mm (30 mil), 0.91 mm (36 mil), 1.13 mm (45 mil) and 1.52 mm (60 mil). This geomembrane is neither smooth nor textured. It generally has either a file or satin finish on each surface and indentations because of geomembrane plies meeting between scrim intersections. Pool Vinyl Liners
This specification sets forth a set of minima, physical, mechanical, chemical, and endurance properties that must be met or exceeded by the geomembrane being manufactured. In a few cases a range is specified. The EIA geomembranes made under this classification are not primarily stabilized with liquid plasticizers but rather KEE which is a polymer plasticizer being much more stable within the formulation and not prone to extraction. Hence, this geomembrane shows good durability behavior in exposed and stressed conditions. This specification is offered in the context of a manufacturing quality control (MQC) specification.
George R. Koerner is director of the Geosynthetic Institute. He is in charge of laboratory accreditation, field certification and continuing education at the institute. He also manages several research projects and has published over 300 technical papers in his 35-year association with polymers used in below-ground construction. Dr. Koerner’s Ph.D. is from Drexel University in geotechnical engineering. He is a registered professional engineer and a certified quality auditor. He has received many awards over the years. The most notable being IFAI’s Environmental Technologies Award of Excellence 1995, ASCE’s DVGI Geotechnical Engineer of the Year in 2004, the title of ASTM Fellow in 2013, GMA’s first Koerner lecturer in 2017 and the title of ASCE Fellow in 2020.
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