STRUCTURAL DESIGN OF ASPHALT PAVEMENTS (ARIZONA)
The report presents findings to supplement the previous report on a new asphalt pavement design concept for Arizona. Laboratory studies of flexural fatigue showed the eleven field paving mixtures could be separated into four distinct groups. Examination of data obtained from a questionnaire and loadometer reports produce a simple procedure for estimating the load and number for each of 5 'design axles'. The study indicated a need to obtain tire inflation pressure and a separation of front axles from single axles in the standard 'W4' table. Dynaflect pavement deflection data showed their great dependence on the surface and base courses (K1) and much less dependence on subgrade (E3). A new procedure for determining compression fatigue and E3 for subgrade soils under repetitive loadings is suggested. The design procedure is illustrated with the new data obtained from the research.
- Prepared by Arizona Transportation and Traffic Inst., Tucson.
Arizona Department of Transportation206 South 17th Avenue
Phoenix, AZ USA 85007
Washington, DC USA 20590
University of Arizona, TucsonTransportation and Traffic Institute
Tucson, AZ USA 85721
- Jimenex, R A
- Publication Date: 1975-5
- Pagination: 132 p.
- TRT Terms: Asphalt pavements; Base course (Pavements); Computer programs; Deflection; Fatigue (Mechanics); Flexible pavements; Flexural strength; Loads; Pavement design; Pavements; Structural design; Subgrade (Pavements)
- Geographic Terms: Arizona
- Old TRIS Terms: Pavement deflection
- Subject Areas: Highways; Materials; Pavements;
- Accession Number: 00094498
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: ADOT-RS-13-142 Final Rpt., FHWA/RD-76-S0439
- Files: TRIS, USDOT, STATEDOT
- Created Date: Apr 21 1977 12:00AM