DESIGN OF FLEXIBLE PAVEMENTS IN VIRGINIA USING AASHO ROAD TEST RESULTS

A METHOD BASED ON THE AASHO ROAD TEST MODEL EQUATION AND A THEORETICAL EQUATION FOR PAVEMENT DEFLECTION IS PRESENTED FOR DESIGN OF FLEXIBLE PAVEMENTS IN VIRGINIA. THE INDEPEND- ENT VARIABLES EVALUATED ARE (A) THE THICKNESS OF THE LAYERS OF THE PAVEMENT, (B) STRENGTH EQUIVALENCIES OF THE MATERIALS IN EACH LAYER OF THE PAVEMENT, (C) SUBGRADE SUPPORT VALUE INCLUDING THE SOIL RESILIENCY AND THE ENVIRONMENTAL CONDITIONS AFFECTING IT, AND (D) TRAFFIC. THE DEPENDENT VARIABLE IS THE DEFLECTIONS MEASURED BY DYNAFLECT IN THE SPRING OF 1967 AND 1968. THICKNESS EQUIVALENCIES OF THE MATERIALS USED IN THE CONSTRUCTION OF FLEXIBLE PAVEMENTS IN VIRGINIA HAVE BEEN DETERMINED. A SOIL CLASSIFICATION MAP OF VIRGINIA, BASED ON ABOUT 200 PROJECTS (EACH WITH 2 TO 30 SOIL SAMPLES) THROUGHOUT THE STATES, HAS BEEN PREPARED. THIS MAP SHOWS FIVE SOIL CLASSIFICATIONS BASED ON RESILIENCY, THE AASHO SOIL CLASSIFICATION, AND TEXTURE OF THE SOILS. A DESIGN METHOD FOR VIRGINIA IN THE FORM OF A NOMOGRAM IS PROPOSED AS A MAINTENANCE AND DESIGN TOOL. TWO ADDITIONAL METHODS ARE BASED ON PRESENT DESIGN CONCEPTIONS, STANDARDS, AND PRACTICE IN VIRGINIA. /AUTHOR/

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/hrr/1969/291/291-007.pdf
• Supplemental Notes:
  • Paper sponsored by Committee on Flexible Pavement Design. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Vaswani, N K
• Discussers:
  • Nichols Jr, F P
• Publication Date: 1969

Media Info

• Media Type: Print
• Features: Appendices; Figures; References; Tables;
• Pagination: pp 89-103
• Monograph Title: Design, evaluation, and performance of pavement systems
• Serial:
  • Highway Research Record
  • Issue Number: 291
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Deflection; Flexible pavements; Nomographs; Pavement design; Pavements; Soil types; Soils; Subgrade (Pavements); Thickness; Traffic
• Identifier Terms: AASHO Road Test
• Uncontrolled Terms: Pavement thickness; Soil classification; Soil conditions
• Geographic Terms: Virginia
• Old TRIS Terms: Pavement deflection; Test results
• Subject Areas: Geotechnology; Highways; Operations and Traffic Management; Pavements;

Filing Info

• Accession Number: 00205776
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Mar 9 1970 12:00AM