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» » » GB1 Brovold Gyratory Compactor The GB1 Brovold Gyratory Compactor Pine Test Equipment, Inc.' S GB1 Brovold Superpave Gyratory Compactor compacts hot mix asphalt specimens at a constant consolidation pressure, a constant angle of gyration, and a fixed speed of gyration. Customers love the GB1 compactor for its portability and ruggedness. Weighing 304 pounds, the GB1 Brovold is completely self-contained and ideal for onsite testing and mobile labs.
Roll it into the bed of a pickup truck or into a van and take it anywhere. The integrated industrial computer controls the compaction of the specimen from start to finish, making the operation of this gyratory very simple. Power Requirements: AFGB1A: 115 VAC(±10%), 15Amp, 60 Hz, 1 ph AFGB1C: 230 VAC(±10%), 10 Amp, 50/60 Hz, 1 ph Dimensions: 760 mm wide x 540 mm deep x 1410 mm high (30.0 inch x 21.3 inch x 55.4 inch) Weight: Approximately 138 kg (304 lb) Applied Pressure: 600 ±5 kPa Note: The applied pressure is fixed. Angle of Gyration: 0.82± 0.02° or 1.16± 0.02° Internal Angle or 1.25± 0.02° External Angle Specify at the time of order.
Note: The angle of gyration is fixed. Speed of Gyration: 30 ±0.5 gyrations per minute, factory set Adjustable range of 20 - 40 gyrations per minute Note: Users can adjust the speed of gyration. System: Electrohyrdaulic Number of Gyrations: 0 - 299 gyrations Specimen Height: 10.0 to 200.0 mm (reported to the nearest 0.1 mm) Mold Dimensions: 150.0mm +0.0/-0.1 mm ID x 280 mm tall (215mm internal height) 10.0 mm minimum specimen height Note: Molds meet the requirements of AASHTO T312 and ASTM D6925. Modes of Operation: Compact to number of gyrations or specified height. Note: Users set the desired mode of operation. Data Acquisition: Gyration number Specimen height (mm) Data Output Options: USB Flash Drive RS232 Serial Communication Receipt Printer, Serial Printer, or Laser Printer (optional) Internal Data Storage: Results from 10 tests are retained in memory.
The AFGB1 requires periodic maintenance to assure continued reliable performance. There are not many moving parts, but there are several items that require attention. MAINTENANCE SCHEDULE: Timing Lift Screw Adjust the Timing Lift Screw if the gyratory head fails to raise and clear the tube when you open the compaction chamber Pressure Plate Screws Check weekly with a 3/16' Allen wrench. Clamp Adjustment Keep all three clamps equally tight. Mold Retaining Latches Remove debris from around these latches after every specimen.
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Clean Remove debris and wipe metal surfaces with WD-40. Battery Under normal usage, the battery should last 4-5 years unless indicator indicates otherwise. LUBRICATION SCHEDULE: Mold Top Plate Apply lubricant before compacting each specimen. Gyratory Head Apply lubricant once a day or every 6 specimens. Tapered Bearing Redistribute the lubricant after each specimen.
Apply fresh lubricant once a week or every 30 specimens. Pressure Plate Apply lubricant before compacting each specimen. Spherical Bearing Apply lubricant once a day or every 6 specimens.
Gyratory Head & Clamp Recesses Apply lubricant as needed. Gyratory Head Lift Nut Apply a light grease or oil as needed.
Do not put lubricant on the threaded rod. SAE 30 Oil INSPECTION SCHEDULE: Hydraulic System Check the oil level weekly or every 30 specimens. Mold Retaining Latches Check for rounding or chipping of the mold latches periodically. What should be considered in identifying a location for a machine?.
A sturdy, approximately level floor is important. The machine weighs about 880 lb. (400 kg) and is top heavy.
The machine can be installed in a mobile lab. Holes are provided in the lower frame bracket to secure the machine to the floor. The minimum floor space requirement is 34.5 inches wide by 35.5 inches deep. Be sure to allow additional space on the right side of the machine for access to the USB data port. Allow space on either side of the machine for access to service it when necessary if there is insufficient room to move the machine around for servicing. The minimum vertical space necessary is about 54 inches. Provide access to an appropriate power supply for the machine purchased.
How movable is the machine?. The machine comes with a set of wheels and handles installed. Once the machine is off the skid, it can be moved a short distance by a single person. Care must be taken, however, because of the machine’s high center of gravity. Three (3) lifting eyes are located on the top of the machine to provide a proper location to connect lifting apparatus.
The lower frame of the machine is configured to receive fork truck forks. How often does a machine need calibrated?. AASHTO R18 specifies that a gyratory compactor should be verified every 12 months. ASTM D6925-15 Section 6.2 specifies that a gyratory compactor should be calibrated annually or whenever there is reason to doubt the stability of the machine's operation.
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AASHTO R18 Section 6.2.1.3. Specifies that equipment that may be affected by moving it to a new location or environment should be calibrated, standardized, or checked before being placed into service. ASTM D6925-15 Section 6.3 specifies that calibration should be verified after it is moved to a new location.
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