THE EFFECT OF VIBRATION ON THE DURABILITY OF UNREINFORCED CONCRETE PAVEMENT

Because a noticeable difference in durability of concrete pavements in Colorado seemed to be associated with differences in consolidation and void content of the concrete, an effort was made to determine the relationship. After extensive laboratory work to determine the basic characteristics of the designed mixes, test sections were layed out at four different locations. These test sections had internal vibration by vibrators having various diameter eccentrics and vibration speeds. In addition, the angle of the vibrators was changed, as was the height of the vibrators, the paver speed and the slump of the mixes. Performance of these test sections was observed from May 1970 until May 1975. Wear in the wheel paths due to studded tires has been approximately 0.1 inch per year in the heavily traveled non test areas of the experimental sections. Wear in the test sections has averaged 0.07 inch per year, but it has not varied directly with the consolidation effort. Although there is statistical evidence to indicate that good field control and reasonable vibration will assure at least 97% consolidation and sound concrete, there does not seem to be a direct relationship between vibration effort and resistance to surface abrasion. Other factors such as curing, mix design, water cement ratio at the surface and aggregate type appear to control surface hardness.

• Corporate Authors:

  Colorado Department of Highways

  4201 East Arkansas Avenue
  Denver, CO  United States  80222

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Gerhardt, B B
• Publication Date: 1975-5-23

Media Info

• Pagination: 69 p.

Subject/Index Terms

• TRT Terms: Aggregates; Air entrainment; Concrete; Concrete curing; Concrete pavements; Consolidations; Durability; Eccentricity; Mix design; Studded tires; Timers; Vibration; Vibratory compaction; Void ratios; Water cement ratio
• Geographic Terms: Colorado
• Old TRIS Terms: Void
• Subject Areas: Geotechnology; Highways; Materials; Pavements;

Filing Info

• Accession Number: 00137407
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: CDOH-P/R-R/SS-75-2 Final Rpt., FHWA/CO/RD-75/2
• Files: TRIS, USDOT, STATEDOT
• Created Date: Sep 16 1977 12:00AM