materials testing – GeoPrac.net

Standards and Codes

ASTM Updates for March, 2012

April 16, 2012 rockman Comments Off

American Society of Testing Materials Logo - ASTM This post contains a list of new, revised and otherwise updated ASTM standards that pertain to the geotechnical engineering, materials testing and related fields. Standard C39/C39M for testing the compressive strength of concrete cyllinders was updated, as was C42/42m for obtaining and testing drilled cores and sawed beams of concrete. The month of March also saw several geosynthetic standards being updated or added, including new standards for selecting the test method for geomembrane seams, and for testing the flexural rigidity of geogrids and other geosynthetics. There are also a few updated standards related to asphalt mix design and sampling of asphalt. Click through for updated ASTM Standards relating to geoprofessionals.

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The death spiral of testing and inspection in construction

January 31, 2011 rockman Comments Off

This is a commentary written by Jaye Richardson, a materials operation manager with AMEC Earth and Environmental, Inc. It appeared in CE News in August of 2010, but I just came accross it in CENews.com’s […]

Standards and Codes

ASTM Updates September 2009

September 28, 2009 rockman Comments Off

American Society of Testing Materials Logo - ASTM 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.

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Miscellaneous

ASTM Updates June 2009

June 29, 2009 rockman Comments Off

American Society of Testing Materials Logo - ASTM D5434 – “Standard Guide for Field Logging of Subsurface Explorations of Soil and Rock” and D4429 – “Standard Test Method for CBR (California Bearing Ratio) of Soils in Place” are two standards revised this month that may be of interest to geotechnical engineers. Those in the construction services and materials testing business should take a look at a number of changes to relevant standards. This month there are also a few revised standards related to detection of different ions in water. I also see that there are a number of geothermal and solar standards that were reapproved this month, most of them seem to have been last modified in the late 1980’s and early 1990’s. Click through for the full list of new, revised and reapproved ASTM standards from June.

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