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AASHTO R38 – Standard Practice for Quality Assurance of Standard Manufactured Materials


This standard practice contains minimum criteria and guidelines for establishing and implementing quality assurance (QA) procedures for standard manufactured materials used in highway construction.

The purpose of this document is to establish minimum quality control (QC) requirements for manufacturers and to provide guidelines for acceptance of standard manufactured materials by transportation agencies.

Standard Manufactured Materials – Materials used in transportation construction are broadly categorized according to their source and corresponding methods of production. The three principal materials categories are as follows:

  1. Project-produced materials
  2. Fabricated structural materials
  3. Standard manufactured materials.


QA; QC; quality assurance; quality control