TMSG (Rice) Apparatus
ASTM C128 | ASTM D854 | ASTM D2041 | ASTM D4867 | EN 12697-5 | AASHTO T209 | AASHTO T283 | AASHTO T100 | AASHTO T84 | AG:PT/T232 | AS 2891.7.1 | NZTA M10
The SGA-5R Gilson Rice Shaker for Specific Gravity & Asphalt Rice Test performs consistent, automatic agitation of Asphalt Rice Test vacuum pycnometers for de-airing, freeing lab technicians for other duties. It is also a useful de-airing agitator for specific gravity tests of fine aggregates (ASTM C128) and soils (ASTM D854), as well as sample preconditioning per ASTM D4867 and AASHTO T 283.
SGA-5RT has modified vibration characteristics to meet Texas DOT requirements.
The Rice Shaker features a built-in 0-99 min., 59 sec. digital timer with ±0.25 second accuracy, a vibration speed controller and a three position switch for manual or timed operation—all front panel mounted for easy use. Variable speed settings closely control agitation to avoid stripping of asphalt.
Gilson's exclusive EZ Clamp System quickly secures pycnometers. Push the buttons, slide into place and a quick twist secures the container. The kit includes rods and threaded speed knobs that tilt to slide freely on or off the rods, then tighten with a few turns to secure clamping.
The SGA-5R includes fitted top and bottom plates for exact fit with SG-16A 2,000g or SG-18A 4,000g Aluminum Pycnometers. Pycnometers come with:
Transparent Vacuum Lid, Tapered Aluminum Lid with Capillary Bore, Threaded Vacuum Aspirator and Tubing included.
MA-170 Digital Residual Pressure Manometer precisely measures applied vacuum during testing. NIST certified model is available as MA-170C.
SG-35 AutoRice™ Digital Manometer / Controller precisely measures vacuum and regulates the vacuum pressure setting and time. The device can also be equipped to monitor shaker vibration energy during theoretical maximum specific gravity testing (Rice Test) of hot-mix asphalt samples. Careful control of these three important factors can mean dramatic improvements in inter-laboratory repeatability and accuracy. Variations in acceleration and frequency energy produced by rice shakers can create repeatability issues as well as cause stripping of the sample.
With the push of a button, the AutoRice™ Controller starts the vacuum pump, regulates vacuum pressure, controls vacuum time and displays vacuum pressure. The optional SGA-126 Shaker Sensor is purchased separately, attaches to the pycnometer and is connected to the controller’s USB port to measure vibration acceleration and frequency. Data from the sensor can be used to calculate a “shaker factor” to establish proper vibration levels.
SG-36 AutoRice™ Digital Manometer / Controller w/ PumpSaver™ Air Drier has the same capabilities as the SG-35 AutoRice unit, but additionally comes with the SGA-128 PumpSaver™ Air Drier. Both models operate on nominal 120 to 240V/50 or 60Hz electrical supplies.
Vacuum pumps are used for a number of applications, primarily in systems requiring de-aired water.
VSV-8FP: Compact single stage vacuum pump
Pumping speed 8 m3/h, ultimate vacuum 0.1 mbar
230 V, 50-60 Hz
RVD-RND70: Dry Piston Vacuum Pump, 70 LPM, 750 mmHg
200 W, 230 V, 50 Hz
VSV-Manifold: 1/4" manifold with needle (flow control) valve, indicator gauge connection and single 6mm outlet
3063D01: 63mm Capsule -100/0 kPa Vacuum Gauge SS Case, Brass Internals
(IANZ gauge calibration available on request)
VSV-Hose: 6mm I.D. silicone hose, 1 meter length
A65401903: Edwards RV8 High Vacuum Pump
- Peak pumping speed: 8.5 m3/h
- Ultimate pressure (Total): 2000 mbar
- Water vapor tolerance: 60 mbar
115/230V, 50/60Hz set to 230V
SG-70 Drierite Gas Drying Unit is an all-purpose dryer used to protect vacuum pumps from harmful moisture in de-airing specific gravity of asphalt. It is designed to dry air to -100°F dew point at atmospheric pressure or pressures up to 90 psi.
Dry air or gas flows through a rubber hose connected to the bottom inlet of the dryer. In addition to the Rice Test, the drier gas drying unit works with vacuum or pressure applications. It also works with other types of specimens. Water capacity is up to 50 grams. The moulded polycarbonate column is sealed with a threaded cap.
Stainless steel springs hold the Drierite Granules between two felt filters. Hose barbs accept 1/4in (6.4mm) or 3/8in (9.5mm) ID tubing.
SGA-106 Indicating Drierite, No. 8 Granules are blue desiccant crystals which contain cobalt chloride, and rapidly absorb water vapor from air and gases. They change from blue to pink when moisture-saturated.
The crystals can be regenerated in an oven for repeated use.