What are the components of a typical asphalt mixture?

A typical asphalt mixture is primarily composed of asphalt binder, aggregates, and additives. The asphalt binder acts as the glue that holds the mixture together, providing waterproofing and flexibility. Aggregates, which include various sizes of crushed stone, gravel, or sand, make up the bulk of the mixture and provide strength and stability. Additives may include chemical agents that enhance certain properties of the asphalt, such as improving resistance to deformation or extending longevity.

Using the correct combination of these components ensures that the asphalt mixture meets design specifications for performance, durability, and workability. Other options present components that do not typically belong together in an asphalt mixture; for example, concrete and metals would not be standard components in a conventional asphalt pavement scenario, as they serve different construction purposes and are used in different types of pavements. Fibers and color additives are less common in standard mixtures and are more specialized for specific applications.