What are the three basic components of asphalt pavements?

The three basic components of asphalt pavements are asphalt, aggregates, and air voids.

Asphalt, often in the form of bitumen, serves as the binding agent that holds the aggregates together. The aggregates, which include stones and sand, provide the necessary structural support and strength to the pavement. Lastly, air voids are the intentional spaces within the mixture that allow for flexibility and help manage water drainage, which is essential for the long-term performance of the pavement. This combination of materials ensures that asphalt pavements can withstand traffic loads and environmental conditions effectively.

Understanding these components is crucial because they influence the performance, durability, and maintenance of the pavement. It allows engineers and builders to design pavements that meet specific operational needs and environmental conditions.