CONTROL OF THE COMPACTION OF ASPHALTIC CONCRETE BY MEANS OF THE GAMMADENSITOMETER

THE FIXED G.D.F. 30 GAMMADENSITOMETER FACILITATES POINT BY POINT MEASUREMENTS WITH A RELATIVE ACCURACY OF PLUS OR MINUS 1 PER CENT OF THE ABSOLUTE VALUE OF THE BULK DENSITY OF THE BITUMINOUS MIXTURE STUDIED. IT IS BASED ON THE PRINCIPLE OF GAMMA RAY DIFFUSION IN MATERIALS. THE NON- DESTRUCTIVE MEASUREMENTS ARE MADE BY PLACING THE APPARATUS ON THE SURFACE OF THE MATERIAL. A STUDY IS MADE OF THE INFLUENCE OF THE TEMPERATURE ON RESULTS OF MEASUREMENTS TAKEN ON HOT-COATED MATERIALS LAID AT 140 AND 150 DEGREES C. A CALIBRATION OF THE COMPACTION WAS CONDUCTED ON THE RN 14, ON A 0/10 ASPHALTIC CONCRETE PLACED ON A 6 CM-THICK LAYER COMPACTED WITH A PNEUMATIC-TIRED ROLLER AND SMOOTH-WHEELED ROLLER. AN ASPHALTIC CONCRETE 10 CM-THICK BASECOURSE WAS THEN COMPACTED WITH (1) A VIBRATING ROLLER FOLLOWING PNEUMATIC-TIRED ROLLERS AND SMOOTH-WHEELED ROLLERS, AND (2) BY THE GAMMADENSITOMETER 30 AND THE SMALL VIBRATORY SHOE ARE GIVEN AND SHOW THE POSSIBILITIES OFFERED FOR THE CONTROL OF THE APPLICATION OF BITUMINOUS MIXTURES. /TRRL/

  • Authors:
    • Belin, J P
  • Publication Date: 1971-2

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Filing Info

  • Accession Number: 00211280
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: TRIS
  • Created Date: Dec 22 1973 12:00AM