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:
Little Rock, AR United States 72203
Washington, DC United States 20590
- Rogers, J E
- Publication Date: 1974-5-15
- Pagination: 30 p.
- 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;
- 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