AASHTO T 276-17 (2021) PDF Download

AASHTO T 276-17 (2021) is a standard method of testing for measuring early-age compression strength and projecting later-age strength in concrete. The standard outlines a procedure for making and curing concrete specimens, as well as testing them at an early age. The specimens are stored under standardized curing conditions, and the temperature history is recorded and used to calculate a maturity index that correlates with strength gain.

In addition to measuring early-age compression strength, this standard also provides guidelines for using these values to project the potential strength of the concrete at later ages. This allows engineers and construction professionals to assess the long-term performance and durability of the concrete in various applications.