The Model 4140 allows the user to produce either 150-mm diameter
or 100-mm diameter asphalt specimens. The user specifies the
number of gyrations (or end specimen height) and consolidation
pressure. The user can adjust the angle of gyration from 0.5 to 2.0°;
the default angle is 1.25°. When using the automatic compaction
option, the user may also choose to automatically send the gyration
versus height and/or pressure versus height data to a computer or a
printer. The unit also allows manual printing of the last six
compacted specimens. All output is in SI units as described in
ASTM E380-90A Standard for Metric Practice.
Before compaction the user heats both the loose asphalt and the
mold/puck assembly. The user then loads the mold with a
predetermined amount of hot mix asphalt (HMA) and places it on
the turntable. The initial angle is 0°. The specimen is now ready for
gyratory compaction.
After compacting the asphalt, the user removes the asphalt specimen
from the mold using the extruder furnished. Once removed from the
mold, the specimen is ready for testing.
NOTE
Do not attempt to operate the Model 4140 before
reading this manual and the safety warnings posted on
the unit. Troxler stresses that the user is solely
responsible for ensuring the safe use of the Model 4140.
Neither the manufacturer, its subsidiary,
representatives, or distributors can assume
responsibility for any mishaps, damage, or personal
injury which may occur from failure to observe the
safety warnings in this manual and posted on the unit.
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