AASHTO TP 69-04 PDF Download

AASHTO TP 69-04 is a standard that provides guidelines for determining the bulk specific gravity of compacted asphalt mixtures. It is similar to ASTM D6752-02a, with some specified differences.

This method is applicable to asphalt mixtures that have open or interconnecting voids and absorb more than 2 percent of water by volume, determined by T 166. It is an alternative method to T 275, and can be used by agencies for determining the bulk specific gravity of asphalt mixtures.

The determination of bulk specific gravity is important as it allows for the calculation of the unit mass of the asphalt mixture. This standard provides the necessary procedures and equipment, specifically the automatic vacuum sealing method, for accurately determining the bulk specific gravity and density of compacted asphalt mixtures.