CONSOLIDATION OF CONCRETE PAVEMENT

An extensive literature review of current consolidation practices and a laboratory investigation to determin 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 continuously 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 coonsolidation 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 not found to be as effective as a parallel mounting method and superplasticizers were found 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 in fresh concrete. (Author) concrete. (Author)

• Record URL:
  • https://library.ctr.utexas.edu/hostedpdfs/tti/341-1F.pdf
• Record URL:
  • https://rosap.ntl.bts.gov/view/dot/84859
• Supplemental Notes:
  • Study conducted in cooperation with the Federal Highway Administration. Study Title, Consoldiation 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

• Media Type: Digital/other
• Features: Appendices; Figures; References; Tables;
• Pagination: 183 p.

Subject/Index Terms

• TRT Terms: Aggregates; Coarse aggregates; Consolidations; Continuously reinforced concrete pavements; Spacing; Structural plates; Superplasticizers; Vibration devices
• Uncontrolled Terms: Aggregate size; Plates
• Old TRIS Terms: Retarding; Vibrators
• Subject Areas: Construction; Geotechnology; Highways; Materials; I52: Construction of Pavements and Surfacings;

Filing Info

• Accession Number: 00399496
• Record Type: Publication
• Report/Paper Numbers: FHWA-TX-85-13+341-1F
• Contract Numbers: Study 2-8-83-341
• Files: NTL, TRIS, ATRI, USDOT, STATEDOT
• Created Date: Aug 25 2004 1:43AM