EVALUATION OF NUCLEAR TYPE MOISTURE DENSITY INSTRUMENTS

A DETERMINATION IS BEING MADE WHETHER SEVERAL SMALL SOURCE NUCLEAR INSTRUMENTS SYSTEMS CAN BE USED EFFECTIVELY AS CONSTRUCTION CONTROL EQUIPMENT. THE CAPABILITIES AND PERFORMANCE CHARACTERISTICS OF THESE INSTRUMENTS WERE INVESTIGATED AND COMPARED WITH THOSE OF THE CONVENTIONAL METHODS PRESENTLY BEING USED BY THE TEXAS HIGHWAY DEPARTMENT. THE PLAN OF RESEARCH INCLUDED BOTH A LABORATORY AND FIELD EVALUATION STUDY. THE LABORATORY PHASE INCLUDED CHECKING THE EQUIPMENT, PERFECTING OPERATING PROCEDURES, DEVELOPING NUCLEAR CALIBRATION CURVES AND COMPARING NUCLEAR TEST RESULTS WITH CONVENTIONAL METHODS. THE FIELD PHASE INCLUDED CORRELATION OF MATERIALS PREVIOUSLY USED DURING THE LABORATORY PHASE IN A CONSTRUCTION ENVIRONMENT. THESE STUDIES INDICATED THAT BETTER AGREEMENT CAN BE OBTAINED BETWEEN THE NUCLEAR BACKSCATTER DENSITY GAUGE AND CONVENTIONAL MEASUREMENTS OF DENSITY IF CALIBRATION OF THE NUCLEAR GAUGES IS PERFORMED IN THE FIELD UNDER CONSTRUCTION CONDITIONS.

• Supplemental Notes:
  • Hpr 1-5, 37, 3
• Corporate Authors:

  Texas State Department of Highways & Public Transp

  11th and Brazos Streets
  Austin, TX  United States  78701
• Authors:
  • Bingham, J M
  • White, J R
• Publication Date: 1966-3-25

Subject/Index Terms

• TRT Terms: Alternatives analysis; Backscattering; Calibration; Construction management; Control devices; Curves (Geometry); Equipment; Evaluation; Field tests; Instrumentation; Laboratory tests; Nuclear tests; Performance
• Old TRIS Terms: Construction control; Construction operations; Nuclear moisture-density determinations
• Subject Areas: Construction; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00219231
• Record Type: Publication
• Files: TRIS, STATEDOT
• Created Date: May 1 1994 12:00AM