AASHTO R 29-15 (2019) PDF Download

AASHTO R 29-15 (2019) outlines the procedures and methodologies for determining the performance grade of an asphalt binder. The standard practice offers two approaches. Firstly, it describes the process of determining the performance grade of an unknown asphalt binder. This involves testing the binder according to specific parameters and criteria outlined in the standard. Secondly, the standard practice provides guidance on verifying the nominal performance grade of an asphalt binder. This involves checking if the performance characteristics of the binder align with the expected grade.

Additionally, the standard practice offers an estimate of the time required to complete a single test sequence. This information can be helpful for planning purposes and ensuring efficient testing procedures.