AASHTO T 30-19 PDF Download

AASHTO T 30-19 is a standard method used to analyze the mechanical properties of extracted aggregate. The standard outlines a procedure for determining the particle-size distribution of fine and coarse aggregates that are extracted from hot mix asphalt (HMA). This is done using sieves with square openings. The purpose of this analysis is to assess the gradation of the aggregate, which is an important factor in determining the performance and quality of the asphalt mixture. By following the specific protocol outlined in the standard, engineers and technicians can accurately measure and classify the particles present in the aggregate, helping to ensure that the asphalt mixture meets the required specifications and performance criteria. This standard provides a reliable and widely accepted approach to mechanical analysis of extracted aggregate, which is an essential component of quality control in the asphalt industry.