Asphalt Specific Gravity Test Equipment
Separate Bulk Gravity from Maximum Gravity
Specific gravity determination in asphalt work covers two distinct measurements: bulk specific gravity of compacted specimens and theoretical maximum specific gravity of loose mixtures. Confirm which measurement your procedure requires before selecting equipment, because the two use different instruments and accessories.
This category supports bulk-gravity and related weighing work. For maximum specific gravity of uncompacted mixtures, review asphalt Rice testing equipment rather than adapting bulk-gravity apparatus to that test.
Match Weighing Benches and Water Tanks
Bulk specific gravity testing commonly uses hydrostatic weighing: a bench-mounted scale with an under-bench weighing hook and a water tank below. Choose the bench and tank so the specimen is fully submerged and weighing remains stable throughout immersion.
Compare listed benches and water tanks for capacity, tank size and scale compatibility. Check the specimen size your method requires—including thick or large-gauge specimens—and confirm the tank and cradle arrangement can accommodate it without contact with tank walls.
Choose Supporting Accessories
Specimen cradles, mats, sieves and specimen-handling items support consistent immersion weighing. Match each accessory to the bench and tank in use rather than assuming pieces from different listings are interchangeable.
Verify the scale's weighing range, readability and any required calibration documentation against your procedure. Confirm water-temperature control arrangements where the method specifies conditioning temperature, and record thermometer or bath details with each result.
Handle Binder Bottles and Specimen Preparation
Binder specific gravity bottles serve gravity determination on asphalt binders; the Binder Specific Gravity Bottle with Seal and Optional Vacuum Connector is a listed option. Match bottle type, capacity and stopper or seal arrangement to the binder procedure, and note where a vacuum connection is optional rather than included.
Prepare specimens per the governing method, including drying, cooling and conditioning before weighing. For general sample storage before testing, compare asphalt sample containers, choosing material and size for the specimen type rather than assuming all containers suit conditioned specimens.
