An extensive literature review of current consolidation practices and a laboratory investigation to determine the effects of coarse aggregate factor, maximum aggregate size, vibrator spacing, the method of vibrator mounting, and the use of superplasticizers with and without set retarders on the achieved consolidation of continously reinforced concrete pavement (CRCP) were performed. Also studied were variations in consolidation throughout the depth of CRCP slabs and a new technique utilizing acceleration as a method of monitoring the consolidation progress in the fresh concrete. The consolidation varies throughout the depth of concrete slabs with the greatest density existing in the bottom. For the aggregate gradations used, a maximum coarse aggregate factor of 0.80 and a maximum aggregate size of 1-1/2 inch yielded the best consolidation. Mounting vibrators perpendicular to the direction of travel was fouund to be as effective as a parallel mounting method and superplasticizers were foond to have detrimental effects on consolidation of stiff concrete. The measurements of acceleration were found to be a viable method of monitoring the consolidation process of fresh concrete. (Author)

  • Supplemental Notes:
    • Study conducted in cooperation with the Federal Highway Administration. Study Titled "Consolidation of Concrete Pavement".
  • Corporate Authors:

    Texas Transportation Institute

    Texas A&M University System, 1600 E Lamar Boulevard
    Arlington, TX  United States  76011

    Texas State Department of Highways & Public Transportation

    Transportation Planning Division, P.O. Box 5051
    Austin, TX  United States  78763

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Winn, D P
    • Olsen, MPJ
    • Ledbetter, W B
  • Publication Date: 1984-8

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 183 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00399302
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-TX-85-13+341
  • Contract Numbers: Study 2-8-83-341
  • Created Date: Feb 28 1986 12:00AM