what are the ingredients of asphalt cutbacks? what are the ingredients of asphalt emulsions? name three uses of asphalt emulsion. why is asphalt emulsion preferred over asphalt cutback? explain the values of performance grading identifier of asphalt binder pg 64-16 for asphalt concrete, define air voids voids in the mineral aggregate voids filled with asphalt what is the purpose of adding fly ash to asphalt concrete?