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Accreditation Directories
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29th Edition of the AASHTO Materials Book Available for Pre-Order June 1st
 The 29th Edition (2009) of the AASHTO Materials Book is now available for pre-order and is expected to be released in early July. The 29th Edition includes over 400 materials specifications and test methods commonly used in the construction industry. To order your copy, phone 1-800-231-3475 or go to the AASHTO Online Bookstore and search HM-29.
Click the image to view the 30-second AASHTO Bookstore Video.
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We Are Conducting Assessments In...
June 4, 2009: We are currently conducting assessments in Missouri, Nebraska, Texas, Iowa, New Mexico, Wisconsin, Colorado, Arizona, and Kansas. Check the assessment tour schedule to see where we're heading next. Please contact us if you have any questions about our assessment schedule.
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New Test Methods Added to AMRL Scope
The following standards have recently been added to the scope of our laboratory assessment and AASHTO accreditation programs. Laboratories can now request these test methods to be included in the scope of their next AMRL on-site assessment and subsequent accreditation activities.
May 14, 2009:
ASTM D2950 (Density of Bituminous Concrete by Nuclear Methods)
ASTM D4972 (pH of Soils)
ASTM D4829 (Expansion Index of Soils)
ASTM D7000 (Sweep Test of Bituminous Emulsion Surface Treatment Samples)
ASTM D7370 (Relative Density of Aggregate by Vacuum Saturation and Rapid Submersion)
ASTM D7428 (Micro-Deval Abrasion of Fine Aggregate)
February 23, 2009:
ASTM D2974 (Moisture, Ash, and Organic Matter of Peat and Other Organic Soils)
ASTM D4943 (Shrinkage Factors of Soils by the Wax Method)
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NTPEP Audit Program
May 14, 2009: AASHTO's NTPEP Audit Program (NAP) is currently conducting audits in the following states: Illinois, Iowa, Minnesota, Oregon, and Utah. If you are interested in learning more about the NTPEP Audit Program (NAP), please log onto the NTPEP website.
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ASTM D427 (Shrinkage Factors) - Inactive Standard
February 9, 2009: ASTM D427 "Shrinkage Factors of Soils by the Mercury Method" is no longer an active ASTM standard, and AMRL has discontinued providing on-site assessments for that method. AMRL will continue to provide assessments for the AASHTO version of the test method, AASHTO T92. In addition, we have added a similar ASTM test to our scope, ASTM D4943 "Shrinkage Factors of Soils by the Wax Method". These changes are effective immediately. AASHTO accreditation for ASTM D427 will be withdrawn for the affected laboratories subsequent to their next AMRL on-site assessment.
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R18-08 release
August 15, 2008: The latest version of AASHTO R18 is now available for use. R18 provides guidance to testing laboratories in the establishment and implementation of a quality management system. All AASHTO-accredited laboratories must be in compliance with the requirements of this standard. Improvements to R18-08 include better formatting for easier reading and more detailed explanations of requirements. Several previous requirements have been removed, while a few others have been added. Section 8 of the revised standard includes a summary of the changes. AMRL will soon begin enforcing the requirements of AASHTO R18-08. To view the standard, go to the AASHTO Accreditation tab and click on the R18 link in the Documents section.
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AASHTO Accreditation
- accrediting laboratories for testing asphalt binder, emulsions, hot-mix asphalt, aggregate, soil, portland cement concrete and hydraulic cement.
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Laboratory Assessment
- assessing testing facilities for procedural, apparatus, and quality system conformance.
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Proficiency Testing
- measuring laboratory precision in construction materials testing.
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Frequently Used Documents
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Interested
in becoming a specifier? AMRL now offers Proficiency Sample
Program data to agencies that recognize participation in AMRL
programs.
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