Patent ID: 6045608
Filing Date: 2000-04-04
Classification: C10C

Abstract:
An improvement in a process for producing asphaltic concrete of the type involving using a heated asphalt counterflow drum mixer wherein a composition comprising asphaltic cement, coarse aggregate, and fine aggregate is heated and mixed in a hot mix process to produce the asphaltic concrete, the improvement comprising:admixing a composition comprising from about 20 to about 80 percent tar sand, by weight, with from about 80 to about 20 percent aggregate, by weight, and from about 1 to less than about 5 percent, by weight, liquid asphalt cement in said drum mixer to form an admixture from said composition;heating said admixture at a first elevated temperature for a set period of time; anddischarging said heated admixture at a second elevated temperature to produce asphaltic concrete.