Wearing Course

Definition

A Wearing Course is a topping or surface treatment applied to pavements or slabs to increase their resistance to abrasion.

Purpose

The purpose of a wearing course is to provide a durable surface layer that withstands traffic wear and environmental conditions. It enhances the longevity and performance of pavements and slabs by protecting the underlying structure from damage.

Examples of Use

• Roads and Highways: Applied as the top layer of asphalt or concrete pavements to resist wear from vehicle traffic.
• Parking Lots: Used to provide a durable and smooth surface that can handle constant vehicular movement.
• Sidewalks: Ensures a long-lasting and safe walking surface for pedestrians.

Related Terms

• Overlay: A layer of material applied over an existing pavement to improve its surface.
• Surface Course: The top layer of a pavement structure, synonymous with wearing course.
• Seal Coat: A thin surface treatment used to protect and extend the life of pavements.

Notes

The composition and thickness of a wearing course depend on the anticipated traffic loads and environmental conditions. Proper installation and maintenance are crucial for optimal performance.