Aggregate Base Course (Asphalt)

Aggregate Base Course with Asphalt

Aggregate Base Course with an asphalt attribute is a foundational construction material commonly used beneath roadways, parking lots, and driveways. This material is typically composed of a blend of crushed stone, gravel, and sand, combined with asphalt binder to enhance stability and cohesion. The addition of asphalt improves the material's load-bearing capacity and resistance to water infiltration, making it especially suitable for high-traffic or moisture-prone areas.




The asphalt attribute in the base course helps bind the aggregate particles together, reducing dust and minimizing movement under heavy loads. This results in a durable, stable base that supports the layers above and extends the lifespan of the finished surface. Common applications include sub-bases for asphalt pavements, commercial parking lots, and residential driveways. Pros include excellent compaction, improved drainage control, and enhanced durability. However, the presence of asphalt may make it less permeable than untreated aggregate, which can be a consideration in certain drainage-sensitive projects.