Aggregate Base Course (Ballast)

Aggregate Base Course Ballast

Aggregate Base Course with a ballast attribute is a robust construction material composed of crushed stone or gravel, engineered for foundational strength and stability. The "ballast" designation indicates that this aggregate is specifically selected for its larger, angular particles, which interlock to provide superior load-bearing capacity and resistance to shifting.




This material is commonly used as a foundational layer beneath railways, highways, and heavy-duty pavements, where structural integrity and drainage are critical. Its coarse, angular nature allows for excellent compaction and stability, making it ideal for supporting heavy loads and preventing settlement. In residential projects, it is often used under driveways, patios, and concrete slabs. The main advantage of ballast aggregate is its ability to promote drainage while maintaining a firm base; however, its larger particle size can make it less suitable for applications requiring a smooth or compacted surface finish.