THE ANALYSES OF ASPHALT PAVEMENT RESEARCH RESULTS ON THE TOMEI AND CHUO EXPRESSWAYS

This report summarizes the results from two areas of the pavement research program. In the first area, the relationship between thickness Index, T sub A(3), and 10 t EAL applications was evaluated. This involved the evaluation (a) of pavement performance, (b) of traffic conditions, and (c) of pavement structure in terms of equivalent asphalt thickness. The study showed that there were two types of pavement lives, the structural one represented by cracking and the functional one represented by rutting. The former showed the curve linear relationship between T sub A(3) and 10 t EAL applications. However, the latter did not correlate with axle load applications. The second area of the study was the development of a rut depth prediction model. Significant factors affecting rut depth were investigated by a statistical method followed by the development of models to predict the rut depth. The significant factor was the 10 t EAL applications followed by PI of recovered asphalt, air void, type of aggregate, annual sunshine duration, T sub A(3), and slope index. The rut depth prediction model could predict with an accuracy of plus or minus 3.2 mm with 95% confidence. Modifications of the structural design curve is now under consideration and mix design criteria were modified based on these test results.

• Supplemental Notes:
  • Volume I of proceedings of 4th International Conference on Structural Design of Asphalt Pavements, Ann Arbor, Michigan, August 22-26, 1977.
• Corporate Authors:

  University of Michigan, Ann Arbor

  Department of Civil Engineering
  Ann Arbor, MI  United States  48109
• Authors:
  • Kodan, N D
• Conference:
  • Volume I of proceedings of 4th International Conference on Structural Design of Asphalt Pavements, Ann Arbor, Michigan, August 22-26, 1977.
• Publication Date: 1977-1

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 894-902

Subject/Index Terms

• TRT Terms: Asphalt pavements; Bituminous mixtures; Expressways; Forecasting; Mathematical models; Mix design; Pavement performance; Pavements; Ruts (Pavements); Subgrade (Pavements); Testing; Thickness; Traffic volume
• Uncontrolled Terms: Pavement thickness; Rut
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00170256
• Record Type: Publication
• Report/Paper Numbers: Proceeding
• Files: TRIS
• Created Date: Mar 29 1978 12:00AM