SAWED JOINTS IN AC PAVEMENT. FINAL REPORT

The objective of this 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. Although this study did not show that providing sawed joints was effective, it was obvious from the field evaluations that sealing reflective cracks is very beneficial to the overall performance of the pavement.

• Corporate Authors:

  Colorado Department of Highways

  4201 East Arkansas Avenue
  Denver, CO  United States  80222

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Harmelink, D S
• Publication Date: 1989-12

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 38 p.

Subject/Index Terms

• TRT Terms: Asphalt pavements; Measures of effectiveness; Overlays (Pavements); Reflection cracking; Sawed joints; Transverse cracking
• Uncontrolled Terms: Effectiveness
• Subject Areas: Highways; Maintenance and Preservation; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 00493700
• Record Type: Publication
• Report/Paper Numbers: CDOH-DTD-R-89-14
• Files: TRIS, USDOT, STATEDOT
• Created Date: Apr 30 1990 12:00AM