MINNESOTA DEPARTMENT OF HIGHWAYS FLEXIBLE PAVEMENT DESIGN - 1969

A NEW FLEXIBLE PAVEMENT DESIGN WAS DEVELOPED FROM THE MINNESOTA DEPARTMENT OF HIGHWAYS AASHO SATELLITE TEST PROGRAM ON 50 SELECTED ROADWAYS. THE DESIGN EMANATED FROM THE STUDY OF THE EFFECTS OF PAVEMENT SECTION CHARACTERISTICS, SUBGRADE SOIL STRENGTH, CLIMATE, AND LOADING AND DISTRIBUTION OF TRAFFIC ON THE PERFORMANCE OF FLEXIBLE PAVEMENTS. THE PAVEMENT SECTION CHARACTERISTICS STUDIED INCLUDE THICKNESS, COMPOSITION, STRENGTH, AND QUALITY. THE STABILOMETER R-VALUE IS USED TO EVALUATE THE SUBGRADE SOIL STRENGTHS. CLIMATIC EFFECTS WERE DETERMINED BY MEASURING SEASONAL CHANGES IN STRENGTH OF SELECTED ROADWAY STRUCTURES THROUGHOUT THE STATE BY MEANS OF THE BENKELMAN BEAM. THE LOADING AND DISTRIBUTION OF TRAFFIC IS DETERMINED IN TERMS OF SUMMATION OF EQUIVALENT 18-KIP SINGLE-AXLE LOADS. THE PSI SYSTEM DEVELOPED AT THE AASHO ROAD TEST IS USED IN A MODIFIED FORM TO EVALUATE PERFORMANCE. THE MODIFICATION INVOLVES USE OF BPR-TYPE OF ROUGHOMETER DATA IN PLACE OF THE SLOPE VARIANCE COMPONENT OF THE EQUATION. A DESIGN CHART IS DEVELOPED THAT SHOWS THE REQUIRED GRAVEL EQUIVALENT THICKNESS DEPENDENT ON EMBANKMENT R-VALUE AND EQUIVALENT 18-KIP SINGLE-AXLE LOADS. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 55-64
  • Monograph Title: Design and performance of rigid and flexible pavements
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00205857
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Apr 25 1971 12:00AM