Mixing Tips
♦ Prepare more asphalt than needed!
♦ It is recommended that the aggregate weight of the sample
be equal or exceed that of the blank sample to ensure the
preparation of slightly more asphalt than needed.
♦ When preparing a calibration mix, the aggregate and asphalt
must be representative of the material normally produced
by the asphalt plant. If the mix is not representative, the
gauge readings will not accurately reflect the actual asphalt
content.
♦ All mixing tools should be kept hot to prevent moisture from
contaminating the mixture and to make mixing easier.
Placing the mixing bowl on a hot plate will aid in mixing.
♦ Form a “crater” in the hot aggregate. Slowly pour the hot
asphalt into the crater and mix until the aggregate is
thoroughly distributed. Mixing time is approximately 15
minutes. If using an electric mixer, mixing time at medium
speed is about 90 seconds.
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