AASHTO R 35-17 (2021) PDF Download

AASHTO R 35-17 (2021) outlines a standardized approach for designing asphalt mixtures using the Superpave system. The purpose of this standard is to evaluate the mix design based on aggregate and mixture properties in order to determine the appropriate proportions of materials for a hot mix asphalt (HMA) job-mix formula.

The emphasis in this standard is on the volumetric properties of the asphalt mixture, specifically the determination of air voids, voids in the mineral aggregate (VMA), and voids filled with asphalt (VFA). These properties play a crucial role in determining the performance and durability of the asphalt pavement.

By analyzing the volumetric properties, engineers can ensure that the asphalt mixture is properly engineered to resist various distresses, such as rutting and cracking, under anticipated traffic and environmental conditions. This standard practice provides guidelines and procedures for conducting laboratory tests and calculations to assess the volumetric characteristics of the asphalt mixture.