DESIGN OF ACHM OVERLAYS BY DEFLECTION ANALYSIS

Asphaltic concrete hot mix (ACHM) overlays used for improving load carrying quality of a roadway have not as yet been designed according to specific criteria. Of the design procedures available, only deflections take into account the structural strength of an in-situ pavement. The report covers eight test sections that were tested in Arkansas during each season for a period of four years. Data were collected, reduced, and plotted on a series of graphs of temperature (pavement & ambient) vs. deflection (total & rebound). Regression analyses were performed on each set of data to fit a trend line and determine the relationship between temperature and deflection. The results are discussed. In most cases, ambient temperature influenced deflections to a greater degree than pavement temperature. For this reason, a flexible pavement design procedure should utilize ambient temperature.

• Record URL:
  http://www.arkansastrc.com/TRC%20REPORTS/HRC%2030.pdf
• 
• Corporate Authors:

  Arkansas State Highway Department

  Division of Planning and Research, P.O. Box 2261
  Little Rock, AR  United States  72203

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Rogers, J E
• Publication Date: 1974-5-15

Media Info

• Pagination: 30 p.

Subject/Index Terms

• TRT Terms: Asphalt concrete; Correlation analysis; Data collection; Deflection; Design; Field tests; Flexible pavements; Highways; Hot mix asphalt; Loads; Measuring instruments; Overlays (Pavements); Pavement design; Performance evaluations; Physical properties; Regression analysis; Structural design; Temperature; Test sections; Trafficability
• Uncontrolled Terms: Design criteria
• Geographic Terms: Arkansas
• Old TRIS Terms: Emperature; Structural characteristics
• Subject Areas: Data and Information Technology; Design; Highways; Pavements;

Filing Info

• Accession Number: 00092425
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: HRC-30-FR Final Rpt.
• Files: NTIS, TRIS, USDOT, STATEDOT
• Created Date: Nov 5 1976 12:00AM