ASTM D6857/D6857M-18 PDF Download

ASTM D6857/D6857M-18 is a standard test method that determines the maximum specific gravity and density of asphalt mixtures using the automatic vacuum sealing method. The maximum specific gravity and density of asphalt mixtures are important properties that are affected by the composition of the mixture, including the types and amounts of aggregates and asphalt materials used. These properties are used to calculate the percentage of air voids in compacted asphalt mixtures and provide target values for compaction. They are also crucial in calculating the amount of asphalt binder absorbed by the internal porosity of individual aggregate particles in the mixture. It is important to note that the quality of the results obtained from this standard depends on the competence of the personnel performing the procedure and the calibration and maintenance of the equipment used. Compliance with the referenced specification (Specification D3666) alone does not guarantee reliable results, as reliability depends on various factors.