Two new standards from the Geosynthetics committee of ASTM will help define properties that can be used in the design of geosynthetic reinforced pavement. I know in my practice in Arizona, ADOT simply allows a boost of Resilient Modulus (R-Value) of 10 when biaxial geogrids are used. Perhaps in time this will lead to a design method to account for the geosynthetic reinforcement in a more analytical way. [Source: Geosynthetics Magazine]
Standards and Codes
ASTM Updates February 2009
GeoPrac’s monthly update on ASTM standards. There are a bunch of updates to C series for concrete, including standards for making and curing specimens in the field, shotcrete specs, and a handfull of geosynthetic and geomembrrane standards have been reapproved. Read on for a summary.
Standards and Codes
ASTM Updates for July 9, 2020
Those of us in the geotechnical profession use ASTM Standards on a daily basis. It’s hard to keep up with changes, so I have brought back a GeoPrac.net feature I had a number of years […]
Project Related
New earthquake mitigation material – geofoam and geogrid
Graduate student Saman Zarnani and Dr. Richard Bathurst of the Royal Military College have developed a new application for geofoam and geosynthetics, to mitigate earthquake damage by improving the foundation subgrade. Initial shake table testing […]