METHOD FOR MEASURING SERVICEABILITY INDEX WITH THE MAYS ROAD METER

PAVEMENT SERVICEABILITY INDEX (PSI) INFORMATION CAN BE OBTAINED WITH THE SURFACE DYNAMICS PROFILOMETER (SDP) DEVELOPED FOR THE TEXAS HIGHWAY DEPARTMENT BY INSTALLING A SMALL DIGITAL COMPUTER IN THE TEST VEHICLE, BUT THIS ADDS TO THE EXISTING HIGH EQUIPMENT INVESTMENT AND OPERATING COST. IN THIS RESPECT THE MAYS ROAD METER (MRM) HAS PROVED ATTRACTIVE, BUT ITS ROUGHNESS MEASUREMENTS ARE DEPENDENT ON ALL FACTORS THAT AFFECT THE VEHICLE'S SUSPENSION SYSTEM, SO THAT STANDARD ROUGHNESS MEASUREMENT UNITS ARE NEEDED TO OFFSET VARIATIONS FROM ONE VEHICLE TO THE NEXT. ACCORDINGLY, STUDIES WERE DIRECTED TOWARD CORRELATING THE MRM WITH SDP-- PSI MEASUREMENTS. BY USING THE LATTER AS A STANDARD, A GENERAL SET OF CALIBRATION, OPERATIONAL, AND CONTROL PROCEDURES WAS DEVELOPED FOR ALL MRM DEVICES IN USE BY THE DEPARTMENT. THESE PROCEDURES ENTAIL CORRELATING THE MRM ROUGHNESS READINGS IN INCHES PER MILE WITH PSI AS MEASURED BY THE SDP. INITIAL RESULTS WITH THE MRM'S THUS CALIBRATED HAVE PROVED ENCOURAGING.

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 68-72
  • Monograph Title: PAVEMENT EVALUATION USING ROAD METERS
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00207535
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: May 21 1973 12:00AM