Mixing Procedure
Use the calibration forms in Appendix F to record the values.
1. Heat a mixing bowl and asphalt.
2. Smear a small amount of hot, liquid asphalt and aggregate
fines in the bowl.
3. To ensure any residual asphalt in the bowl represents the
design mix, scrape out the bowl.
4. Weigh the mixing bowl and record the weight on line B of
the form. If available, use the tare function on the scale to
“zero” the bowl weight.
5. Put hot, dry aggregate (see Mixing Tips, above) into the
preheated mixing bowl. Use the same type of aggregate as
in the blank sample. Record the weight on line C.
6. Add lines B and C. and enter the subtotal on line D.
7. Use the Method 1 or Method 2 formula on the previous page
to calculate the total design weight. Use the method that
duplicates the asphalt plant method. Enter the weight on
line E.
8. Slowly add hot asphalt to the aggregate until the total design
weight is reached. If the actual weight is slightly over or
under the design weight, record the value on line F.
9. Calculate the actual %AC (see example below) and enter the
value on line G.
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