ACCESS TUBE INSTALLATION FOR NUCLEAR DEPTH GAGES

CONTRACT RESEARCH TO MEASURE SUBGRADE MOISTURE VARIATIONS UNDER OKLAHOMA HIGHWAYS WITH NUCLEAR DEPTH MOISTURE AND DENSITY GAGES REQUIRED DEVELOPMENT OF SPECIAL PROCEDURES TO INSTALL NUCLEAR GAGE ACCESS TUBING. A PICKUP TRUCK MOUNTED DRILLING UNIT WAS DESIGNED TO CORE PAVEMENT AND POWER A SPECIALLY DESIGNED AUGUR IN HEAVY OKLAHOMA CLAY SUBGRADES. PROCEDURES FOR FIELD TEST SITE LOCATION AND INSTALLATION, AS WELL AS INITIAL NUCLEAR DATA COLLECTION, ARE DESCRIBED. THE METHODS WERE SUCCESSFUL, AS 50 FIELD TEST SITES HAVE BEEN INSTALLED IN NORTHCENTRAL AND NORTHEASTERN OKLAHOMA. A 4-HR TO 6-HR ON-PAVEMENT WORKING TIME WAS REQUIRED TO CORE THE PAVEMENT, INSTALL THREE ACCESS TUBES AT EACH SITE, AND COLLECT THE INITIAL NUCLEAR DATA. MAINTENANCE AND DOWN TIME OF THE DRILLING EQUIPMENT WAS NEGLIGIBLE. PERIODIC DATA COLLECTION IS NOW UNDERWAY AT ALL FIELD TEST SITES. /AUTHOR/

  • Supplemental Notes:
    • Vol 94, No HW2, PROC PAPER 6224, PP 129-140
  • Authors:
    • Haliburton, T A
  • Publication Date: 1968-11

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  • Accession Number: 00235410
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 5 1994 12:00AM