DEVELOPMENT OF EQUIPMENT AND TECHNIQUES FOR A STATEWIDE RIGID PAVEMENT STUDY

IN 1963 THE TEXAS HIGHWAY DEPARTMENT INITIATED A STATEWIDE PERFORMANCE STUDY OF CONTINUOULSY REINFORCED CONCRETE PAVEMENTS. THE STUDY WAS DESIGNED TO DEVELOP INFORMATION PAVEMENT PERFORMANCE IN TERMS OF FIVE PRIMARY VARIABLES NAMELY, SERVICEABILITY RATING, TRAFFIC, LOAD DEFLECTION, STEEL STRAIN AND EDGE DEPOSITS. EACH OF THESE VARIABLES IS BEING HANDLED AS AN INDIVIDUAL SUBSTUDY TO PROVIDE DATA FOR AN OVER OVERALL ANALYSIS OF PAVEMENT PERFORMANCE. THIS REPORT DESCRIBES THE DEVELOPMENT OF EQUIPMENT, TECHNIQUES AND PROCEDURES RELATIVE TO THE COLLECTION OF THE LOAD-DEFLECTION DATA. SPECIFICALLY COVERED IS DEVELOPMENT OF /1/ METHOD OF OBTAINING THE TEMPERATURE DIFFERENTIAL BETWEEN THE TOP AND BOTTOM OF THE PAVEMENT, /2/ DEVICE FOR THE MEASUREMENT OF THE RADIUS OF CURVATURE OF THE PAVEMENT AS IT DEFLECTS UNDER LOAD, /3/ LOADED TRUCK CAPABLE OF CARRYING EQUIPMENT AND MOVING ABOUT THE STATE WITHOUT DIFFICULTY AND /4/ OPERATING PROCEDURES FOR BENKELMAN BEAM AND RADIUS OF CURVATURE MEASUREMENTS. THE STUDY INDICATED THAT' 1. TEMPERATURE DIFFERENTIALS MEASURED IN SMALL AUXILIARY SLABS OF THE SAME THICKNESS AND CONCRETE AS THE HIGHWAY PAVEMENT WILL CLOSELY APPROXIMATE THOSE THAT EXIST IN THE HIGHWAY PAVEMENT. 2. A DEVICE, KNOWN AS THE BASIN BEAM, CONSISTING OF A 3/4- INCH WIDE, 2-INCH DEEP ALUMINUM BEAM WITH A FIXED REFERENCE POINTS 40 INCHES APART AND A 0.0001-INCH DIRECT READING DIAL GAGE AT MIDSPAN IS A USEFUL TOOL FOR PREDICTING THE RADIUS OF CURVATURE OF THE PAVEMENT UNDER APPLIED LOADS. /BPR/

  • Supplemental Notes:
    • Hpr, Bpr-10, STATE 1-8-63-46, JAN65
  • Corporate Authors:

    Texas State Department of Highways & Public Transp

    11th and Brazos Streets
    Austin, TX  United States  78701
  • Authors:
    • McCullough, B F
  • Publication Date: 1965-1

Subject/Index Terms

Filing Info

  • Accession Number: 00206258
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, STATEDOT
  • Created Date: Oct 1 1994 12:00AM