AASHTO R 84-17 (2021) PDF Download

The AASHTO R 84-17 (2021) standard focuses on the testing and analysis procedures required to develop a dynamic modulus master curve using the AMPT. The standard specifically applies to both dense-graded and gap-graded asphalt mixtures with nominal-maximum aggregate sizes of up to 37.5 mm.

The practice takes into consideration the temperature limitations of the AMPT and provides guidance to users on the selection of suitable test temperatures. It aims to establish a dynamic modulus master curve, which is a crucial performance parameter for determining the stiffness and resistance to fatigue cracking of asphalt mixtures. By following this standard, practitioners can obtain reliable data on the dynamic modulus properties of asphalt mixtures, which can then be used in the design and evaluation of pavement structures.