NUCLEAR METHODS FOR DETERMINING THE WATER CONTENT AND UNIT WEIGHT OF FRESH CONCRETE

THE USE OF NUCLEAR RADIATION TO DETERMINE THE WATER CONTENT AND UNIT WEIGHT OF AGGREGATES AND FRESHLY MIXED CONCRETE WAS STUDIED. THE HYDROGEN PRESENT IN THE WATER CAUSES THE NEUTRONS EMITTED FROM A STEADY SOURCE TO BE REDUCED IN ENERGY, OR "THERMALIZED." THE NUMBERS OF THERMAL NEUTRONS PRODUCED BY STANDARD SIZE AND SHAPE SAMPLES OF SAND, GRAVEL, AND CONCRETE MIXES WERE MEASURED AND CORRELATED WITH THE QUANTITY OF WATER PRESENT IN THE SAMPLES. A HIGH DEGREE OF CORRELATION WAS FOUND FOR THE MATERIALS USED IN THIS INVESTIGATION. GAMMA RADIATION WAS USED TO MEASURE UNIT WEIGHTS OF SAMPLES OF SAND, GRAVEL, CEMENT, AND CONCRETE OF THE SAME DIMENSIONS. /AUTHOR/

  • Supplemental Notes:
    • Vol 6, No 4, PP 826-841
  • Authors:
    • Lepper, H A
    • Rodgers, R B
  • Publication Date: 0

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Filing Info

  • Accession Number: 00214063
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 2 1972 12:00AM