Method of making paving composition without adding asphalt content oil or minimizing addition

摘要

An improved method of making hot mix asphalt, without adding virgin asphalt concrete oil, includes several steps: adding gravel to a container; and heating and rotating the gravel in the container to a suitable temperature for creating the hot asphalt mix. While heated gravel rotates in the container, processed shingles, having a predetermined %/w of AC oil (20%/w on average), are added to a mixing auger along with at least 1 to 2 parts of rejuvenating oil per 100 parts of the processed shingles. The processed shingles and rejuvenating oil are mixed together for about 10 to 20 seconds in the mixing auger creating a slurry of rejuvenated shingles. The slurry of rejuvenated shingles from the mixer auger are then released into the heated and rotating gravel in the container, forming hot mix asphalt with a total oil content of between about 4%/w to 8%/w of the hot mix asphalt, advantageously without adding virgin asphalt concrete oil.