AASHTO T 312-19 PDF Download

AASHTO T 312-19 is a standard method of test that focuses on preparing and determining the density of asphalt mixture specimens by utilizing the Superpave gyratory compactor. The test is designed to measure the compaction properties of hot-mix asphalt (HMA) specimens in a cylindrical shape. The Superpave gyratory compactor is a machine specifically designed for compacting asphalt mixtures, and it helps to simulate the compaction process that occurs during actual pavement construction.

The standard provides detailed instructions on how to prepare the HMA specimens and perform the compaction process using the Superpave gyratory compactor. It specifies the compaction temperature, number of gyrations, and other testing conditions to be followed during the test. The goal is to achieve a specific target density for the asphalt mixture, which is an important parameter for evaluating the performance of the mixture in the field.