What construction material is primarily used for paving in oil surfacing?

In oil surfacing, asphalt is the primary material used for paving due to its excellent properties that suit various roadway applications. Asphalt serves as a durable and flexible binder which allows for the construction of smooth and skid-resistant surfaces. This material effectively withstands changing weather conditions, provides good traction, and is relatively easy to maintain.

Due to its composition, asphalt can also be mixed with aggregates to enhance performance and longevity. This adaptability contributes to its widespread use in paving, particularly for highways, parking lots, and airport runways, where a strong yet pliable surface is essential. The other materials mentioned, while useful in certain contexts, do not provide the same combination of durability, flexibility, and ease of maintenance that asphalt offers in oil surfacing applications.