Methods for maintenance of flexible asphalt pavements and preventative life time

Preventive maintenance of asphalt concrete can often extend the pavement life for a number of years at relatively low costs. The types of preventive maintenance that are discussed in this study include rejuvenators, slurry seals, surface treatments, and crack sealing. The emphasis of this study is directed towards the use of asphalt rejuvenators. The maintenance procedure should be selected for a specific project to be maintained, and the treatment should be designed for the project. Random selection of maintenance procedures may be ineffective resulting in loss in performance and additional life cycle costs. This study provides some guidance into the selection process for maintenance procedures, problem areas to consider, and expected performance of the various procedures

Keywords:

pavement , rejuvenate , slurry seals , surface treatments , crack sealing