COMPOSITIONS AND METHODS FOR PELLETIZED RECYCLED ASPHALT SHINGLES

摘要

Embodiments of the present disclosure are directed to compositions of and methods for pelletized recycled asphalt shingles used in asphalt pavement. In particular, the recycled asphalt shingle pellets include a soft center with a biofuel or bio-oil diluent, and a harder, water-resistant shell coating. It is believed that by using a biofuel, such as biodiesel, more recycled asphalt shingles material may be used in the formulation of asphalt cement without compromising the performance grade of the asphalt cement.

主权项

1. A plurality of asphalt pellets, each of the pellets comprising:
a core pellet comprising: recycled asphalt shingles material in an amount ranging from about 90 wt. % to about 95 wt. %; and a softening agent in an amount ranging from about 5 wt. % to about 10 wt. %;wherein the softening agent is selected from the group consisting of biofuels, bio-oils, and combinations thereof; and,
a shell coating comprising: a water-resistant agent in the amount of at most about 2 wt. %.