Asphalt rejuvenater and recycled asphalt composition

摘要

A composition for rejuvenating asphalt comprises between 5-25% by weight shale oil modifier and between 75-95% by weight asphalt cement. The asphalt cement may consist of an AC-10 binder or an AC-20 binder. The shale oil modifier is made of dehydrogenated crude shale oil, the shale oil modifier exhibiting non-Newtonian properties when mixed with asphalt cements. A recycled asphalt pavement consists of the above-described rejuvenating composition and an aggregate composition comprising between about 30-40% recycled asphalt pavement and between about 60-70% virgin aggregate. A method for rejuvenating asphalt pavement includes milling and collecting a select thickness of asphalt pavement of a portion of an existing roadbed. A shale oil modified asphalt comprising between about 5-25% shale oil modifier and 75-95% asphalt cement is provided. An aggregate comprising about 60-70% virgin aggregate and about 30-40% of the milled and collected asphalt is combined with the shale oil modified asphalt and then applied to the portion of the existing roadbed.