A prime coat is a single application of either a specially formulated asphalt emulsion or a low-viscosity asphalt cutback. Their primary functions are to penetrate quickly into the granular surface and bind the material together, to partially waterproof the granular surface to prevent water erosion, to provide a temporary riding surface prior to overlay or seal coating and to provide a bond between the existing surface and the new wearing surface.
Research – Designing Standard Asphalt Paving Mixtures for Greater Durability
1971-Designing Standard Asphalt Paving Mixtures for Greater Durability-Norman W. McLeod
