What it is
A loose asphalt sample is placed in a calibrated container and vacuum is used to remove trapped air before volume is measured.
SANAS T1018
Public test guide
Determines the density an asphalt mixture would have with no air voids.
Plain-language explanation
The project specification controls the exact method and acceptance requirement.
A loose asphalt sample is placed in a calibrated container and vacuum is used to remove trapped air before volume is measured.
Loose asphalt sample, vacuum pycnometer, vacuum system, balance, water and temperature measurement.
Maximum theoretical relative density of the asphalt mixture.
Provides the reference needed to calculate air voids and assess compaction of laboratory specimens and pavement cores.
Typical test sequence
Prepare and weigh the loose mixture
Add water and apply the specified vacuum cycle
Determine final volume and calculate maximum theoretical density
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