TM 5-822-10/AFM 88-6, Chap. 6
g. Step 7. Select a preliminary mix design to provide penetration of recovered asphalt binder to be approximately
50 by interpolating between penetration values of 40 and 90 as determined in step 6. The change in penetration with a
change in recycling agent is not linear, but for the preliminary mixture design a linear interpretation is sufficient. The
properties at optimum asphalt and recycling agent contents are presented in table B-4.
h. Step 8. At start-up of plant operations, modify the mix design to suit field conditions. The properties of the
asphalt binder can be adjusted without changing other mix properties significantly by increasing the amount of recycling
agent slightly and decreasing the amount of asphalt cement by the same amount or vice versa. Failure to modify mix
design to meet field conditions may result in an unsatisfactory mix.