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 for April 2011
It’s that time again. Here are a collection of changes/additions to ASTM standards that are relevant to geotechnical engineers, soils labs, CQA firms and related disciplines. There are a couple of interesting new standards available. D7698 is a new procedure for estimation of in-place density and water content of soil and aggregate by correlation with complex impedance. I’m not eactly sure what that is, but it sounds cool. There is also a new standard (D7702) that provides guidance for the evaluation of direct shear results involving geosynthetics. Read on for these and other updates.
Standards and Codes
ASTM Updates November 2010
New and revised standards related to the geo-industry from the past month. Includes a new standard for measuring Hydraulic Conductivity of Unsaturated Soils. Click through for the full list.
Available Resources
Two November Webinars from Maccaferri: Advancing Geosynthetics and Hydraulic Applications
Maccaferri, a manufacturer of geogrid, gabion, rockfall protection, and other geoconstruction products is offering a series of webinars. On November 8, the topic will be ‘Advancing Maccaferri Geosynthetics’. On November 15, the topic will be […]