COMPACTING THE SPECIMEN
The following is a checklist for compacting an asphalt specimen
with the Model 4140. Each step is discussed in detail in the
following text.
✓
Set up the gyratory compactor.
✓
Prepare the specimen.
✓
Clean the turntable and loading head with a degreasing cleaner.
✓
If compacting at angles less than 0.7°, then convert the unit for
small angle compaction (see page 3-18) and before each
compaction cycle, apply a light lubricant such as Slick 50 One
Lube to the turntable.
✓
Compact the asphalt specimen.
✓
Remove the mold containing the compacted specimen from the
compactor.
✓
Extrude the asphalt specimen from the mold.
SETTING UP
The Model 4140 requires some set up before compacting a
specimen (see page 2-9). Check the number of gyrations and
pressure (see page 2-10). If the user wants to automatically output
gyration versus height data, connect the control unit to the computer
or printer and turn on the Auto Output option (see page 2-12). To
print the pressure-versus-height data, turn on the Pressure Printout
feature (see page 2-17).
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