THE SIGNIFICANCE OF PAVEMENT DESIGN AND MATERIALS IN D-CRACKING. FINAL REPORT

A two-phase investigation was carried out to determine the efficacy of reducing the maximum size of coarse aggregate to minimize freeze-thaw damage and the development of D-cracking in highway pavements. This included evaluating factors not amenable to laboratory conditions. One phase consisted of repeat pavement surveys of already existing pavements to determine whether reducing maximum particle sizes of coarse aggregate alleviated D-cracking. Results are summarized in an interim report for this project, dated December 1986. The other, primary, phase was the construction and monitoring of a test pavement on SR2 near Vermilion, Ohio, which incorporated design as well as materials variables with respect to D-cracking (and other performance characteristics). Results after 16 years of service (1975 through 1990) indicate that reducing the maximum size of coarse aggregate can alleviate D-cracking, and that, once initiated as seen at the wearing surface, traffic loading becomes an important factor in propagating the extent and severity of deterioration. "Daylighting" the granular subbase (no artificial drains) greatly improved the rideability of the pavement, while other factors, such as source of cement, joint sealants, subbase vapor barriers, and longitudinal drains were of minor, in any, significance. Other effects on performance also were noted. For example, reducing the maximum size of coarse aggregate tended to increase the frequency of transverse cracks, many, if not most, of which were faulted. Unsealed joints appeared to perform as well as joints containing sealants. Tied concrete shoulders appeared to greatly alleviate faulting and pumping.

  • Corporate Authors:

    Construction Technology Laboratories, Incorporated

    5400 Old Orchard Road
    Skokie, IL  United States  60077-1030

    Ohio Department of Transportation

    25 South Front Street
    Columbus, OH  United States  43215

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Stark, D C
  • Publication Date: 1991-6

Media Info

  • Features: Appendices; Figures; Photos; Tables;
  • Pagination: 176 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00616573
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/OH/91/009
  • Contract Numbers: State Job 14334(0)
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Nov 30 1996 12:00AM