Geosynthetic Institute

GRI (2006) GRI Standard GM13 Test Properties, Testing Frequency and Recommended Warrant for High Density Polyethylene (HDPE) Smooth and Textured Geomembranes. Geosynthetic Institute (GSI), Folsom, USA... 

Table 3.3. Testing, standards and requirements for HDPE geomembranes according to test method GM 13 of the Geosynthetic Institute (GSI)...

As a comparison, Table 3.3 shows a list of the properties tested and test procedures specified by the Geosynthetic Institute, Philadelphia, for testing and certification of HDPE geomembranes. The requirements are also indicated in Table 3.3. 

The determination of the dimensional change is not part of the requirements for HDPE geomembranes of the Geosynthetic Institute (Table 3.3), although this test quantity is an important and easy-to-measure parameter for a high quality processing. 

C. R. Lawson, Geotextile containment International perspectives, Proc. Seventeenth GRI Conf., Geosynthetic Institute, Philadelphia, USA, December (2003), pp. 198-221. 

Geosynthetic Institute. GRI test methods, http //www.geosynthetic-institute.org/meth.htm. 

Geosynthetic Institute, Folsom, PA, United States Drexel University, Philadelphia, PA, United States... 

Depending on site-specific conditions, there may be other features such as air pollution, ozone, product orientation, moisture conditions and duration, etc. That said, a concentrated effort on to predict the lifetime of geotextiles has been ongoing at the Geosynthetic Institute this section is the status-to-date for four different types of commercially available polypropylene geotextiles. 

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. 

Flgnre 11.7 Geosynthetic Institute s ongoing roadway separation study. 

Bastioli, C., 2005. Handbook of Biodegradable Polymers. Rapra Technology Ltd, pp. 57—102. Geosynthetic Institute, 2010. In Proceedings of the GRI-21 Conference, Philadelphia. 

GRI-GTIO, 2001. Test Methods, Properties and Frequencies for High Strength Geotextile Tubes Used as Coastal and Riverine Structures. Geosynthetic Institute, Folsom, Pamsylvania, USA. 

GRI-GT14, 2004. Standard Test Method for Hanging Bag Test for Field Assessment of Fabrics Used for Geotextile Tubes and Containers. Geosynthetic Institute, Folsom, Pennsylvania, USA. 

Koemer, RM., 2015. In-Situ Stabilization of Soil Slopes Using Nailed (Or Anchored) Geosynthetics. A Webinar by the Geosynthetics Institute, www.geosynthetic-institute.org. 

Sprague, C.J., 2013. The evolution of geosynthetics in erosion and sediment control. In GRI-25, Geosynthetic Institute Conference, Long Beach (digital proceedings). 

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. 

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