AASHTO R 47-19 PDF Download

AASHTO R 47-19 is a standard practice that provides guidelines and procedures for reducing large samples of hot mix asphalt (HMA) to a testing size. The purpose of this standard is to ensure that the reduced test samples accurately represent the characteristics of the large sample from which they are taken.

The standard emphasizes the importance of minimizing variations in the measured characteristics between the test samples and the large sample. It provides detailed instructions on how to carry out the reduction process in a consistent and standardized manner.

The methods described in AASHTO R 47-19 include both mechanical and manual techniques for reducing the sample size. It also provides guidance on the appropriate equipment and tools to be used for this purpose.