Asphalt Concrete Mix Design and Construction Hot Mix Asphalt Concrete (HMA) Mix Designs Objective: Develop an economical blend of aggregates and asphalt that meet design requirements Historical mix design methods Marshall Hveem New Superpave gyratory Requirements in Common
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Place pre-heated aggregate in bowl and add hot asphalt
Place bowl on mixer and mix until aggregate is well-coated
Example of typical full-size compactors.
%Gmm at Nini
%Gmm at Nmax
Selection of Design Asphalt Binder Content
To produce a quality hot asphalt mixture that contains the desired proportions of asphalt and aggregate and meets all specifications.
Aggregate Entry Point
THE BASIC PRINCIPLE HAS NOT CHANGED MUCH
GOOD COMPACTION LEADS TO GOOD PERFORMANCE