Sawed Joints in AC Pavement

摘要

The objective of the study was to evaluate the effectiveness of sawing controlled joints into a new asphalt surface. These sawed joints were located over existing transverse cracks which had developed in the old asphalt mat. Because there are no known treatments which prevent the eventual reflection of the existing cracks it was hoped the sawed joint would produce a straight, neat joint in the overlay. After the four year evaluation period it was determined that reflective cracking was not being controlled by the saw cut and in some cases the sawed joint was cause of additional deterioration of the pavement surface.