What is the term for random surface cracking of the asphalt layer?

Crazing refers specifically to the formation of random, fine surface cracks in asphalt. This phenomenon can occur due to a variety of factors, including aging of the material, thermal cycling, or exposure to UV light. These cracks do not penetrate deeply into the asphalt layer but are visible on the surface and can lead to further deterioration of the pavement if not addressed.

In contrast, terms like fracture typically imply a more significant and often deeper break or crack in the material. Pitting usually involves small, localized depressions or holes in the surface rather than random cracking. Weathering encompasses a broader range of environmental effects on materials over time and is not limited to the surface cracking pattern specified in the question. Therefore, the use of "crazing" accurately identifies the specific type of surface cracking described.