Surface preservation treatments can be described as improving:

• A. Only the aesthetics of pavement
• B. Functional characteristics only
• C. Structural integrity
• D. Both functional and structural characteristics

Answer: (B)

Surface preservation treatments are specifically designed to enhance the performance and longevity of pavement, addressing both functional and structural aspects. These treatments, such as seal coats, slurry seals, and micro-surfacing, primarily aim to protect the pavement surfaces from moisture infiltration, oxidation, and damage from traffic loads.

Choosing to focus solely on functional characteristics overlooks the comprehensive benefits these treatments offer. While they do improve functional aspects like skid resistance and surface smoothness, they also play a pivotal role in maintaining the structural integrity of the pavement. By extending the life of the pavement surface, these treatments help prevent further deterioration that could compromise the structural layers beneath.

Therefore, the most accurate understanding of surface preservation treatments is that they improve both functional and structural characteristics of the pavement, making the appropriate choice one that reflects this dual benefit.