Specific Gravity Testing Equipment
Asphalt Specific Gravity Testing equipment or Rice Test, named after the test’s originator, James Rice, is used to determine theoretical maximum specific gravity. Theoretical maximum specific gravity is used to calculate air voids of paving mixtures, the amount of bitumen absorbed by the aggregates, and to provide target values for the compaction of paving mixtures in the field.
- Aggregate Washers process samples up to 15lb (7kg) and saves time and effort compared to manual aggregate washing when preparing for particle size analysis.
- Vacuum Lid can be used to convert the Wash Drum for Small Aggregate Washer into a deaerator or a vacuum pycnometer. This allows the loose asphalt sample to be agitated so entrapped air is removed, similar to the deairing process specified in the Asphalt Specific Gravity (Rice) Testing methods.
- Digital Residual Pressure Manometer is a mercury-free option for measuring vacuum levels (residual pressure) during the deairing process. Manometers are NIST traceable and are available with or without a NIST calibration certificate.