What is "transverse cracking" in asphalt pavements?

Transverse cracking refers to cracks in asphalt pavements that run perpendicular to the direction of traffic flow. This type of cracking is often associated with changes in temperature, where the asphalt expands when heated and contracts when cooled. As the pavement undergoes these thermal cycles, stress can build up in the material, leading to cracks forming across the surface. This can be exacerbated by the aging of the asphalt binder, which loses elasticity over time.

Understanding this phenomenon is crucial for pavement management and maintenance, as transverse cracking can indicate underlying issues such as inadequate design or materials that are not suited for the environmental conditions they face. Identifying the cause of transverse cracking allows for appropriate interventions to be implemented, preserving the integrity and longevity of the pavement.