EVALUATION OF PRESENT CONDITION OF PAVEMENT SECTIONS-SPECIAL REPORT FOR INVESTIGATION 183

THE REPORT IS ONE OF A SERIES RELATED TO VARIOUS ASPECTS OF THE RESEARCH STUDY APPLICATION OF AASHO ROAD TEST RESULTS TO DESIGN OF FLEXIBLE PAVEMENTS IN MINNESOTA. THE PURPOSES OF THIS ASPECT OF THE STUDY ARE (1) TO REVIEW THE PAVEMENT SERVICEABILITY-PERFORMANCE CONCEPT DEVELOPED AT THE AASHO ROAD TEST (2) TO DESCRIBE WORK DONE ELSEWHERE TO UTILIZE AND FURTHER DEVELOP THE CONCEPT AND (3) TO MAKE VARIOUS CORRELATIONS BASED ON (1) AND (2) ABOVE, AND ON WORK IN MINNESOTA LEADING TO THE DEVELOPMENT OF THE BEST PROCEDURE FOR DETERMINATION OF THE PRESENT SERVICEABILITY INDEX OF EACH TEST SECTION IN THE STUDY. PRESENT SERVICEABILITY RATING (PSR, A SUBJECTIVE RATING) BY A 3-MAN TEAM, AND MINNESOTA ROUGHOMETER, RUT DEPTH, AND CRACKING MEASUREMENTS WERE MADE ANNUALLY ON ALL 50 TEST SECTIONS. AN EQUATION FOR PSR IS DEVELOPED BY REGRESSION ANALYSIS FROM CORRELATIONS BETWEEN THE PRESENT SERVICEABILITY RATINGS AND ROUGHOMETER MEASUREMENTS. TERMS FOR RUT DEPTH AND CRACKING ARE INTRODUCED IN THE EQUATION RESULTING IN AN EQUATION FOR THE PRESENT SERVICEABILITY INDEX. (PSI). A METHOD OF CALIBRATING THE ROUGHOMETER IS PRESENTED. PRINCIPAL RESULTS OF THE RESEARCH ARE AS FOLLOWS: (1) A PSI EQUATION WAS DEVELOPED AND VALUES FOR EACH TEST SECTION FOR THE YEARS 1963 THROUGH 1967 WERE COMPUTER. (2) FOR THE PAVEMENTS OF THIS STUDY, THE EFFECT OF SURAFCE TEXTURE ON PSI WAS FOUND TO BE INSIGNIFICANT. (3) THE METHOD DEVELOPED FOR DETERMINING THE PSI WAS FOUND TO PROVIDE A MEANS TO OBTAIN A SATISFACTORY MEASURE OF PAVEMENT PERFORMANCE. (4) SUGGESTED IMPROVEMENTS TO THE BASIC SERVICEABILITY-PERFORMANCE CONCEPT ARE PRESENTED. /BPR/

  • Supplemental Notes:
    • Hpr-1(6), STATE 327, BPR 16
  • Corporate Authors:

    University of Minnesota, Minneapolis

    Minneapolis, MN  USA  55455

    Minnesota Department of Highways

    ,    
  • Publication Date: 1967-6-20

Subject/Index Terms

Filing Info

  • Accession Number: 00206305
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, STATEDOT
  • Created Date: Oct 13 1994 12:00AM