AASHTO re:source Overview Video

The primary vision of AASHTO re:source is to be the center for promoting quality and achievement of excellence in construction materials testing (CMT). We provide services and tools through our three major programs: the Laboratory Assessment Program (LAP), the  Proficiency Sample Program (PSP), and the  AASHTO Accreditation Program (AAP). Through these activities, we evaluate testing competency, promote continual improvement, and instill confidence in the laboratories and specifiers that use our programs.



Video Gallery

  • Join the AASHTO re:source Team
    0:00 / 0:00

  • Accreditation Process
    0:00 / 0:00

  • AASHTO resource Rebranding
    0:00 / 0:00

  • Laboratory Assessment Process
    0:00 / 0:00



  • A Beginner’s Guide to AASHTO Accreditation

    I get asked a lot of questions about all of our programs. Some of the most commonly asked questions are regarding the AASHTO Accreditation Program (AAP). This is understandable, as it can seem like a daunting task for a new laboratory to get the accreditation process started.
    Full story
  • I Received A Low PSP Score, What Next?

    You just received an e-mail notifying you of low PSP ratings. This means that at least one of your scores was more than two standard deviations from the grand average, or that your laboratory did not submit data. (If you want more information on what ratings mean and how we calculate them, please review Proficiency Sample Ratings: Being Average Has Never Been So Good).
    Full story
  • Maintaining AASHTO Accreditation, Maintaining Quality

    Being AASHTO accredited shows that your laboratory is serious about quality. However, the process isn’t over after AASHTO accreditation is initially granted. By maintaining accreditation, you are showing your continued commitment to excellence.
    Full story


Copies of standards can be purchased through the AASHTO Store or ASTM International's Standards & Publications