An asphalt concrete mixture includes 94% aggregate by total weight. The aggregates consist materials passing the 3/8" Sieve (94.7%) while materials passing the No. 200 sieve is to be used as the Filler (5.3%). The specific gravities of aggregates, filler and asphalt are 2.635, 2.748, and 1.088, respectively. If the bulk density of the mix is 147 pcf, determine: 1. Percent Voids in Total Mix 2. Percent Voids in Mineral aggregate 3. Percent Voids filled with asphalt 25

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Asphalt Binders and Mixtures

Asphalt binders are subsidiary products procured during the refining process of petroleum while manufacturing gasoline, diesel, and similar petroleum products. Asphalt binders are obtained from the residue that remains after the distillation of petroleum, this residue is further subjected to steam distillation and oxidation to remove the traces of gas oil present in the residue. Certain additives or modifiers are also added to asphalt binders to alter them to suit different applications.