What describes aggregate surface treatments?

Aggregate surface treatments involve the application of multiple layers of asphalt and aggregate to create a durable surface for roadways. This method enhances the surface's structural integrity and provides improved traction. The layering process allows for proper embedding of aggregates into the asphalt layer, ensuring a stronger bond and enhancing the performance and longevity of the surface. The use of multiple applications is crucial in achieving a well-compacted, stable surface that can withstand traffic and environmental conditions.

The other choices relate to specific aspects of pavement treatments but do not encompass the essence of aggregate surface treatments. A single application of a tack coat refers specifically to bonding layers rather than the layered approach of aggregate surface treatments. While reducing dust is indeed a benefit of some surface treatments, it does not specifically define aggregate surface treatments. Lastly, a fog seal is a technique for sealing and rejuvenating existing surfaces rather than the foundational layering process involved in aggregate surface treatments.