Ultra Thin Lift HMA

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Mix Design

To ensure adequate performance of a project, a mix design must be developed and submitted for approval prior to placement of material. The design shall be devoloped by a certified asphalt design technician and established a range of torlerance for the asphalt and aggregate mixture. Any change in materials, mixture problems or segregation may result in the need for a new or revised job mix formula.  


  • The thickness of the lift is typically three to five times the Nominal Maximum Aggregate Size (NMAS).
  • Use RAP to help control cost and prevent scuffing.