AASHTO T 24M/T 24 is the AASHTO standard method of test for obtaining and testing drilled cores and sawed beams of concrete. The edition listed in the AASHTO Materials Book (45th edition, July 2025) is T 24M/T 24-22, in Part 2, Standard Methods of Test.
Highway and materials labs refer to it when concrete is taken from an existing pavement or structure as a drilled core or a sawed beam and then tested. The same AASHTO listing includes a separate method, T 148, for measuring the length of drilled concrete cores. Confirm the edition named in the project or agency specification before setting up sampling and reporting.
Obtaining cores calls for a laboratory or field coring machine fitted with suitable core bits. Our laboratory coring machine and bits are used for drilling concrete cores for testing to AASHTO T 24M/T 24. If you need help matching AASHTO T 24M/T 24 requirements to your parts or setup, contact our team.
