For rigid (portland cement concrete) pavements, preservation techniques include:

Patching, joint sealing and joint and spall repairs, followed by diamond grooving and grinding to restore ride quality;

Full-depth patching with load transfer retrofit, followed by diamond grooving and grinding; and

White topping (not unlike a thin HMA overlay, but using a fast-curing, high-durability concrete mix).

Information contributed by Kraton Polymers appears in this article.