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]
Miscellaneous
Sustainable Initiatives in Geosynthetics
Geosynthetics manufacturers around the world are trying to find ways to use more recycled plastics in their products, to use greener energy to produce their products, and to find more and better ways to recycle […]
Standards and Codes
ASTM Updates September 2010
Last month there were several updates to standards involving texting the flexural strength of concrete as well as updates to some masonry and dimension stone standards. ASTM D6926 – Standard Practice for Preparation of Bituminous Specimens Using Marshall Apparatus has been updated, so if you are involved in asphalt pavement testing, make sure you go and find out what the changes are. There are also a whole slew of groundwater and site investigation standards that were reapproved.
Standards and Codes
ASTM Updates July 2009
Revised, new, and reapproved ASTM standards for the month of July. This month was a busy one for the various comittees with 108 standards related to concrete, geotechnical lab testing, asphalt, lab testing and other standards updated. Read on for the list.