This comparative “Rodeo” field test, on poorly-graded sand embankments for new highway construction, conducted by Dr David White and others at the Center for Earthworks Engineering Research, as part of the SHRP 2 (US Strategic Highway Research Program), evaluated the different engineering properties of 4 geosynthetics, including NPA (Novel Polymeric Alloy – Neoloy) Geocells. 8 Comprehensive QC and QA methods were used to evaluate the results and validated that Neoloy Geocells are more effective at increasing the stiffness and lifespan of highways than any other geosynthetic solution. Cyclical plate loading tests demonstrated that the Neoloy Geocells had the lowest permanent deformation (4.1 mm vs. 5.6 mm for geogrid) and the highest modulus of all the geosynthetics.

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