What is the main purpose of aggregate blending in the Asphalt Mix design ?

in Superpave or Marshall Mix Design

in SuperPave

you determined

Gmb @ N-in

Gmb,Gmm @ N-des

Gmb,Gmm @ N-max

to make all require in limits

%Gmm @N-des

%Gmm @N-max

%VIM,  %VFB,   %VMA

To provide a voids free (or with minimum voids) in the concrete mixture. And have the densstiest concrete mix. to have a well workable mix