A 2004 paper by J.P. Giroud and Jie Han provides a practical design method for geosynthetic-reinforced unpaved roads. The method outlined in the paper was very detailed, and the authors wanted to provide a summary for the benefit of practitioners who wish to use the method. Additionally, some equations in the paper are generic and some have been calibrated for specific geosynthetics (the Tensar BX1100 and BX1200 biaxial geogrids, with new work by another author applying to Tensar’s Triax geogrid) and some practitioners were not clear on this matter. Finally, the authors stress the need for calibration of the method when using other geosynthetics. These three issues were addressed by a 2-part series in Geosynthetics Magazine by Giroud and Han. You can read the first part and the second part at GeosyntheticsMagazine.com. [Image from Geosynthetics Magazine]
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ASTM Updates September 2009
This post contains a summary of geotechnical, materials testing, geosynthetic and related testing standards that were updated by ASTM during the month of September. This month there were not as many updates as the last couple, but a few that caught my eye are a new standard for measuring geosynthetic-soil resilient interface shear stiffness, a revision to the standard practice for laboratories testing concrete and concrete aggregates for use in construction and criteria for laboratory evaluation and a revision to the standard for measuring slump flow of self-consolidating concrete.
Geosynthetics Manufacturer Posts Product Videos
Gundle/SLT Environmental, Inc. (GSE) is a manufacturer and marketer of geosynthetic lining products and services in the following markets: agriculture, aquaculture, canals, civil, golf courses, mining, power, sportsfields, stormwater retention, waste containment, wastewater, and other industrial applications. They have recently released a series of product videos on YouTube. But you don’t have to search for them yourself, you can watch them right here on GeoPrac, just read on! Thanks to Geosynthetica.net for the heads up.