D-CRACKING IN PCC PAVEMENTS: CAUSE AND PREVENTION

Field studies to arrest D-cracking in existing pavement by means of surface treatment with linseed oil in mineral spirits, with a commercial silicone, and with a commercial resin sealer were unsuccessful over 6 years of service. Vertical drains (wicks) for the purpose of removing base course moisture proved totally ineffective. Laboratory studies demonstrated conclusively that (Kansas) limestones contain no free lime; that the grinding of reactive river sands and gravels to high fineness to inhibit the alkali-aggregate reaction (actually to accelerate it to completion prior to forming the concrete) proved unfeasible; that bubbling pressure techniques can be used to determine maximum pore size in limestone samples, but not to discriminate 'good' limestones from 'bad' limestones with respect to D-cracking potential; and that D-cracking can be induced in the laboratory.

  • Corporate Authors:

    Kansas State University, Manhattan

    Department of Applied Mechanics
    Manhattan, KS  United States  66502

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    Kansas State Highway Commission

    State Office Building
    Topeka, KS  United States  66612
  • Authors:
    • Best, C H
  • Publication Date: 1974-6

Media Info

  • Pagination: 121 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00090437
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: KSU-EES-2472 Final Rpt.
  • Files: NTIS, TRIS, USDOT
  • Created Date: May 29 1975 12:00AM