15 March 2001
DISTRESS 42, BLEEDING
4.1. Description. Bleeding is a film of bituminous material on the pavement surface which
creates a shiny, glass-like, reflecting surface that usually becomes quite sticky. Bleeding is
caused by excessive amounts of asphalt cement or tars in the mix and/or low air-void content. It
occurs when asphalt fills the voids of the mix during hot weather and then expands onto the
surface of the pavement. Since the bleeding process is not reversible during cold weather,
asphalt or tar will accumulate on the surface. A deduct curve for bleeding is shown in Figure 4.1.
4.2. Severity Levels.
No degrees of severity are defined. Bleeding should be noted when it is extensive enough to
cause a reduction in skid resistance (Figure 4.2.).
4.3. How to Measure. Bleeding is measured in square feet (square meters) of surface area. If
bleeding is counted, polished aggregate is not counted in the same area.
4.4. Options for Repair.
Do nothing; apply heat, roll sand, and sweep loose material.