Specific Gravity of Asphalt

Free and entrapped air is removed from the asphalt sample to prepare for the test. The prepared sample is then weighed immersed in water.

Gilson offers a wide selection of equipment and products to prepare for and conduct the Rice Test in accordance with ASTM and AASHTO standards, and ensure the correct asphalt mixture with minimal variability.

• Finnex HMC Digital Controlled Titanium Immersion Heater provides precise temperature control for 20–60 gallon water tanks.
• Rice Test Shaker for Specific Gravity & Asphalt Rice Test agitates the pycnometer in preparing asphalt samples for Rice Test to remove entrapped air. Meets several ASTM and AASHTO standards.
• Digital Residual Pressure Manometer for measuring vacuum that is applied to the sample during deairing. It meets ASTM D2041 and AASHTO T 209 standards.
• Autorice™ Digital Manometer/Controller System is a time-saving apparatus used with a Rice Shaker and Pycnometer units in testing the theoretical maximum specific gravity of hot-mix samples. Available with or without SGA-128 PumpSaver.
• Pycnometers are available in 2,000, 4,000, and 6,000g capacities for determining accurate measurements of the specific gravity of bituminous paving mixtures.
• Vacuum Pumps de-air soil slurries for specific gravity applications when used alone or in combination with hot plates. Models have enough vacuum capacity for simultaneous deairing of multiple samples.
• Drierite Air Dryer is used during the deairing process to prevent water from entering the vacuum pump.
• Indicating Drierite is used in conjunction with the Laboratory Air/Gas Dryer and for other applications to absorb water vapor from air and gases quickly.
• Specific Gravity Bench for weighing samples suspended in a water tank or with weighing cradles to determine the relative density of bituminous mixtures.
• Specific Gravity Water Tanks are available in 30 or 44gal capacity and are used in weighing bituminous mixtures to determine relative density.
• Density Weighing Cradles for suspension weighing to determine the specific gravity or bulk density of asphalt or aggregates. It can also be used with pycnometers.
• EZ Mount Heater/Circulator used with Specific Gravity Water Tank to achieve circulation and temperature range needed in testing specific gravity.
• No. 8 Stainless Steel Wire Mesh Basket suspends aggregates and other materials for weighing in water.
• Asphalt Bulk Specific Gravity Device is a computer-driven system that offers speedy and accurate determinations of bulk specific gravity in 4 and 6in (102 and 152mm) asphalt samples.

For more information on Specific Gravity of Asphalt, here are our related blogs:

• What is Superpave? Understanding Performance-Based Asphalt
• Specific Gravity of Asphalt Test: What Equipment Do I Need?