PERFORMANCE RATING FOR AGGREGATE-SURFACED ROADS

AGGREGATE-SURFACED ROADS, ESPECIALLY THOSE CONSTRUCTED WITH VOLCANIC CINDERS, HAVE PERFORMED WITH VARIABLE RESULTS. THE U.S. FOREST SERVICE, IN CONNECTION WITH FOREST DEVELOPMENT ROAD CONSTRUCTION, INITIATED A STUDY TO DETERMINE WHAT PARAMETERS INFLUENCED THE PERFORMANCE OF CINDERS WHEN USED AS A WEARING SURFACE. A ROAD-RATING SYSTEM, SIMILAR TO THE AASHO ROAD TEST METHODS, WAS DEVELOPED TO DETERMINE WHICH WERE "GOOD ROADS" AND WHICH WERE "POOR ROADS" BASED ON 0 TO 5 NUMERICAL RATING SCALE. FORTY-SEVEN ROADS IN FORESTS IN SOUTH-CENTRAL OREGON WERE RATED AND STATISTICALLY CORRELATED WITH MAINTENANCE, RUTTING, WATERING, SPEED, AND TRAFFIC VOLUME BY MEANS OF A MULTIPLE LINEAR REGRESSION PROGRAM. THE RESULTING REGRESSION EQUATION HAD A MULTIPLE CORRELATION COEFFICIENT OF 0.812, WITH RUTTING AND SPEED BEING THE MOST SIGNIFICANT VARIABLES. THE RESULTS ARE FELT TO APPLY TO ALL TYPES OF AGGREGATE-SURFACED ROADS, WITH THE RESULTANT NUMERICAL RATING REFERRED TO AS A PERFORMANCE INDEX. THE INFORMATION FROM THIS RATING SYSTEM WILL BE USED TO RECOMMEND SPECIFICATIONS FOR UNTREATED SURFACE-COURSE MATERIAL. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1970/311/311-007.pdf
• Supplemental Notes:
  • Paper sponsored by Committee on Pavement Condition Evaluation and presented at the 49th Annual Meeting. 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:
  • Lund, John W
  • Hendrickson, Larry G
• Publication Date: 1970

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 91-98
• Monograph Title: Pavement slipperiness, roughness, and condition evaluation
• Serial:
  • Highway Research Record
  • Issue Number: 311
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Aggregates; Forest roads; Plastic deformation; Ratings; Regression analysis; Surface course (Pavements); Traffic speed; Traffic volume; Volcanic ash; Wearing course (Pavements)
• Subject Areas: Data and Information Technology; Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 00207192
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Sep 28 1970 12:00AM