"FRACTURE AND SEAT" RESTORES PCC PAVEMENTS

The use of hot mix asphalt (HMA) overlays presents a long term, economical way to rehabilitate PCC (portland cement concrete) pavements. If, however, HMA overlays are placed directly over an existing worn PCC pavement, the resulting system is likely to develop reflection cracking. Such cracking, which "reflects" upward through the HMA, is caused by horizontal and vertical movement within the underlying PCC layer. To stop reflection cracking, a public works agency can fracture the slab before placing the HMA overlay. Such fracturing reduces the effective length of the PCC pavement and prevents excessive stresses from developing in the HMA overlay. In recent years, fracture-and-seat projects have met with success in many states, including Alabama, Kentucky, Tennessee, New Mexico, Michigan, Virginia, Iowa, and Minnesota.

  • Availability:
  • Corporate Authors:

    Public Works Journal Corporation

    200 South Broad Street
    Ridgewood, NJ  United States  07451
  • Publication Date: 1996-4

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00721216
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 10 1996 12:00AM