Geosynthetics for CCR, PFAS and energy applications

October 1st, 2021

This issue of Geosynthetics magazine delves deep into two innovative uses of geosynthetic clay liners (GCLs) in very different applications: coal combustion residual (CCR) leachates and per- and polyfluoroalkyl substances (PFAS) mitigation in landfills. We also examine three case studies of energy companies using high-density polyethylene (HDPE) geomembranes for flowback water in water evaporation/recycling ponds. […]

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Measuring strain in geosynthetics

October 1st, 2021

Q: Currently, what is the best-known method to measure strains in geosynthetics? We are having arguments between results generated from crosshead movement and extensometers. A: This question arises often when comparing ISO 527/ASTM D638 and ASTM D6693 results. The former requires an extensometer, where the latter utilizes crosshead deflection and assumes gauge lengths. This discussion […]

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Geomembrane freshwater bladders for eco-friendly beach resort

August 31st, 2021

Photograph courtesy of Solmax An eco beach resort in an undeveloped wilderness area in Panama needed to find a way to store fresh water (rainwater) for use during dry spells. The goal of the resort is to educate while entertaining and to reduce the impact on the environment. It was thus important to the resort […]

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An open solicitation to join in a round-robin effort to find a substitute for Igepal CO-630

June 1st, 2021

Improved stress-cracking resistance in high-density polyethylene (HDPE) geomembranes has been a quest of our industry and a hot research topic for years. The Geosynthetic Institute (GSI) has been working in this area since the mid-1980s. The GRI GM13 standard specification for HDPE geomembranes has moved the ASTM D5397 (appendix) single point notch constant tension load […]

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Atarfil announces acquisition of Garden City Geotech

February 28th, 2018

On Feb. 26, 2018, Atarfil, headquartered in Atarfe (Granada) Spain, announced the acquisition of Garden City Geotech of Heatherton, Victoria, Australia. Atarfil said in a press release, “The complementary nature of the Garden City Geotech acquisition is expected to enable us to raise our strengths by combining solid local expertise and presence in the Australian […]

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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 […]

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