LOCATION AND CONTINUITY OF REINFORCEMENT IN CONCRETE

THIS PAPER REPORTS RESULTS OF EXPERIMENTATION WITH A MILITARY MINE DETECTOR AS A MEANS FOR INVESTIGATING GAPS, LAPS, BREAKS, AND POSITIONING OF WIRE FABRIC SHEETS IN REINFORCED-CONCRETE PAVEMENTS. THE OPERATION OF THE DETECTOR IS BASED ON THE PARAMAGNETIC EFFECT OF THE REINFORCING STEEL UPON AN INDUCED MAGNETIC FIELD IN THE DETECTOR. WHEN THE DETECTOR IS PASSED OVER THE SURFACE OF THE REINFORCED CONCRETE, THE EFFECTS OF VARIATIONS IN THE LOCATION AND CONTINUITY OF THE MESH ARE REGISTERED BY A METER IN VIEW OF THE OPERATOR. THE INVESTIGATION WAS LARGELY EXPLORATORY AND WAS LIMITED TO ONE TYPE OF DETECTOR AND WIRE FABRIC REINFORCEMENT. FOR MESH REINFORCEMENT, IT WAS DEFINITELY INDICATED THAT BREAKS IN THE MESH, GAPS LEFT INTENTIONALLY OR DUE TO POOR CONSTRUCTION PROCEDURE, THE LENGTH AND LOCATION OF LAPS, AND POSSIBLY THE RELATIVE DEPTH OF THE MESH CAN BE DETERMINED. FROM THE RESULTS WITH WIRE FABRIC, IT APPEARED POSSIBLE THAT THE INSTRUMENT COULD BE ADAPTED TO DETERMINATION OF THE LOCATION, ALIGNMENT, AND CONTINUITY OF ISOLATED REINFORCING BARS, SUCH AS CENTER JOINT TIE BARS, TRANSVERSE JOINT DOWELS, AND PANEL MARGINAL BARS. 14 VARIATIONS IN THE ARRANGEMENT OF THE SHEETS WERE TESTED.

  • Supplemental Notes:
    • Vol 25, No 4, PP 28-33, 2 FIG, 1 TAB
  • Authors:
    • Lord, G W
    • Couch, R W
    • Gotham, D E
  • Publication Date: 1955-4

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Filing Info

  • Accession Number: 00214085
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 11 1972 12:00AM