Consolidation of Concrete Pavement

Details

• Creators:
  Winn, Dan P. ; Olsen, Mikael P. J. ; Ledbetter, W. B.
• Corporate Creators:
  Texas Transportation Institute. Texas A&M University
• Corporate Contributors:
  Texas State Department of Highways and Public Transportation ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Aggregates Compaction Concrete Compaction Concrete Consolidation Concrete Density Concrete Pavements Concrete Vibration Consolidation Consolidation Monitoring Continuously Reinforced Concrete Pavement Continuously Reinforced Concrete Pavements Degree Of Consolidation Density Literature Reviews Monitoring Vibration

  More +
• Publication/ Report Number:
  FHWA/TX-851l3 +341-1F
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas ; United States
• Edition:
  Final Report: September 1982 - August 1984
• Corporate Publisher:
  Texas Transportation Institute. Texas A&M University
• Abstract:
  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 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 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 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.
• Format:
  PDF
• Funding:
  2-8-83-341
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:3d26a072dc34ccd5305a8cb23dcec83004b37a8904c8f83fd32ece7d0f3f2f8b9a86ba31fe7c1bf600fdbd1324cdc5cbe39f53d7869f77351088bb3a2409450b
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/84859/dot_84859_DS1.pdf
• File Type:
  [PDF - 5.49 MB ]