CRACK AND SEAT PERFORMANCE

The effectiveness of the crack and seat process in preventing reflection cracking on asphaltic overlays of portland cement concrete pavement (PCCP) is evaluated. New Mexico has approximately 145 mi of PCCP existing on the Interstate system. In a 4-year period from 1984 to 1988, 110 mi were rehabilitated using the crack and seat process. The existing portland cement concrete was cracked and seated and overlaid with asphalt concrete. To further reduce reflection cracking, a paving fabric was used. The areas that were cracked and seated were inspected for distresses, mainly reflection cracking. Roughly 3% of the cracked and seated sections exhibited low-severity transverse reflection cracking, whereas the experimental sections not cracked and seated exhibited a high rate of transverse cracking. The crack and seat process with paving fabrics is greatly reducing the reflection cracking that has been a major problem in asphalt overlays of PCCP. This method seems to be a sound alternative for rehabilitating the existing PCCP.

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: p. 188-193
  • Monograph Title: Pavement analysis, design, rehabilitation, and environmental factors, 1991
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00621596
  • Record Type: Publication
  • ISBN: 0309051177
  • Files: TRIS, TRB, ATRI
  • Created Date: Apr 30 1992 12:00AM