AASHTO M 43-05 (2018) PDF Download

The AASHTO M 43-05 (2018) standard provides guidelines for determining the size and quality of aggregate materials used in the construction and maintenance of highways and bridges. It establishes definitions and ranges for mechanical analysis of coarse aggregates and screenings, ensuring uniformity and consistency in their use.

The standard defines aggregate size designations and establishes specifications for the various sizes of coarse aggregates and screenings. It includes guidelines for determining the percentage of material passing through different sieve sizes, ensuring that the aggregate materials meet the required gradation specifications. This helps ensure that the aggregate materials used in road and bridge construction meet the necessary standards for strength, stability, and performance.

It is worth noting that the AASHTO M 43-05 (2018) standard is considered technically equivalent to ASTM D 448-12. This means that the specifications and guidelines provided in both standards are consistent and can be used interchangeably. This ensures the compatibility and uniformity of aggregate materials used in the construction industry, facilitating effective communication and adherence to the industry standards.