The foundational layer beneath asphalt or concrete pavements, often composed of crushed rock, gravel, or recycled materials, provides structural support. It is compacted to create a stable and level surface. As an example, a roadway experiencing high traffic volume will necessitate a thicker and more durable material layer than a lightly used pathway.
This structural component is crucial for distributing loads, preventing deformation, and ensuring the longevity of the surface layer. Its use reduces the likelihood of cracking, rutting, and other forms of pavement distress. Historically, the absence of such a prepared sub-surface has led to rapid deterioration and costly repairs of paved surfaces.
