PREPARING A SPECIMEN
Slowly insert the puck, with the small face down, in the mold. The
bottom of the puck will hang just below the mold bottom. For the
rest of the chapter, the mold with the puck inserted will simply be
called the mold.
NOTE
Always wear heat resistant gloves when handling any
hot substance.
When moving the mold, firmly grasp it on either side
using the handle.
Mix and heat the asphalt to consolidation temperature. Also, heat
the mold with the puck inserted.
Remove the asphalt from the oven. Place it on your work surface.
Remove the heated mold from the oven. Place it next to the hot mix
asphalt.
To prevent the asphalt from sticking to the puck, place a specimen
paper in the heated mold (see Figure 4-1). Load the hot mix asphalt
into the mold. If using the optional temperature probe, measure the
asphalt temperature before inserting the top specimen paper. To
prevent the asphalt from sticking to the loading head, place another
specimen paper on top of the asphalt.
CAUTION
Do not heat molds above 175 °C (350 °F). Heating above
this temperature may warp the mold and create errors
in the angle of gyration.
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