Poor Adhesion or Bond to Road Surface
The complete loss of a surface treatment or seal coat happens
rarely and therefore is not listed as one of the major defects;
nevertheless, it can occur. Poor bond between an existing surface
and a seal coat placed over it may be due to the following:
- a film or layer of dust
- moisture in the old surface following wet weather
- low ambient temperature
- use of a binder that is too viscous at the time rock is applied
- any combination of these at the time the seal coat was laid.