AASHTO R 84-17 PDF Download

The standard practice, AASHTO R 84-17, outlines the procedures for developing a dynamic modulus master curve for asphalt mixtures using the Asphalt Mixture Performance Tester (AMPT). This practice is specifically designed for dense- and gap-graded mixtures with nominal-maximum aggregate sizes up to 37.5 mm.

The purpose of this standard is to account for the temperature limitations of the AMPT and guide users in selecting appropriate test temperatures. By following this practice, engineers and researchers can obtain reliable and accurate measurements of the dynamic modulus, which is an essential parameter for characterizing the mechanical behavior of asphalt mixtures.

By establishing a dynamic modulus master curve, practitioners can assess the performance of asphalt mixtures under various loading and environmental conditions. This information is crucial for designing and evaluating asphalt pavement structures, improving their durability, and predicting their long-term behavior.