Geosynthetics Research Institute

Standards have been developed for GTs, geogrids (GGs), GNs, GMs, GCLs, GCs, and general GS. 

Because it has contributed directly to approximately 17% of standards currently under ASTM D35 jurisdiction, the contribution of GRI to the geosynthetics standards development process cannot be overlooked. 

GT2 Biological Clogging of Geotextile or Geotextile/Soil System D1987 

GT3 Deterioration of Geotextiles from Outdoor Exposure D5970 

GG3(a) Tension Creep Testing of Stiff Geogrids D5262 

---

Source U.S. EPA, Requirements for Hazardous Waste Landfill Design, Construction, and Closure, EPA/625/4-89/022, U.S. Environmental Protection Agency, Cincinnati, OH, August 1989. a U.S. Army Corps of Engineers Test Method. b Geosynthetic Research Institute Test Method. 

The Geosynthetic Research Institute (GRI) has published a detailed listing of HDPE geomembrane requirements, GRI Test Method GM13, including quality assurance measures, which, in similar fashion to the BAM certification guidelines, have been developed in close co-operation with... 

Koemer JR and Koemer RM (1999) A survey of solid waste landfill liner and cover regulations Part II - worldwide status, GRI report 23. Geosynthetic Research Institute, Folsom, USA... 

Oxidative induction temperature and/or time is a property of plastics that is mainly determined by their stabilizers. Oxidative induction temperatures and times will be increasingly considered thanks to the introduction of the specification of the Geosynthetic Research Institute for geo-memhranes made from PE-HD (GRI-GM13) [176]. This specification requires that raw materials manufacturers provide the oxidative induction times and their characteristics for their products and on the basis of oven storage and UV storage tests [177]. 

GRI Test-Method GM 13 Test Properties, Testing Frequency and Recommended Warrant for High Density Polyethylene (HOPE) Smooth and Textured Geomembranes, Geosynthetic Research Institute, 2003... 

This concept was used, for example, to estimate the induction time of HOPE geomembranes by Hsuan and Koemer (1998). OIT and its HP application via HP-OIT testing are employed in specifications for HOPE, linear low-density polyethylene, and PP geomembranes (see Geosynthetic Research Institute standard specifications). 

Geosynthetic Research Institute, 2012. http //www.geosynthetic-institute.org. NTPEP, 2015. http //www.ntpep.org. 

Dr Robert Koerner is a Professor Emeritus at Drexel University and founded both the Geosynthetic Research Institute (GRl) and the Geosynthetic Institute (GSI). He served as director until recently when his son George rose to that position. Bob has forty years of experience in the field of geotextiles, and has authored and co-authored over two hundred journal papers and book chapters on the topic. 

We sincerely thank all of our 74 sponsoring organizations. Without them, GSI simply could not have happened or existed. This chapter is part of the research activity ongoing at the institute. Current GSI member organizations and their contact members are available at the institute s website at www.geosynthetic-institute.org. Board of Director members are listed accordingly. 

---