The American Association of State Highway and Transportation Officials recently released the 44th edition of its “Standard Specifications for Transportation Materials and Methods of Sampling and Testing and AASHTO Provisional Standards,” more commonly known as the “Materials Standards.”
[Above image by AASHTO]
Developed by the AASHTO Committee on Materials and Pavements, these standards contain specifications, recommended practices, test methods, and provisional standards commonly used in the construction of highway facilities.
Provisional standards are also published to allow practitioners to use them early in the research or development phase.
In addition to revisions to harmonize industry standards, update technology, and generally improve the standards, the 44th edition includes 15 conversions to dual units and more updates to temperature measuring devices.
Two of the new standards in this edition include a new test method for determining concrete strength using acoustical resonance methods and a new test method for determining the early opening of concrete pavements using maturity.
Finally, one of the new provisional standards evaluates the rutting and moisture resistance of paving materials.
Altogether the 2024 edition of the Materials Standards includes eight new and 84 revised standards. In total, it contains 564 standards, divided into three PDF files.
To order a copy, visit the online AASHTO Store online and search by the publication’s item code: HM-44.
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