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

Language

• English

Media Info

• Features: Figures; Photos;
• Pagination: p. 25-6
• Serial:
  • Bull Liaison Labs Routiers /France/
  • Issue Number: 50
  • Publisher: Laboratoire Central des Ponts et Chausees (LCPC)

Subject/Index Terms

• TRT Terms: Asphalt concrete; Bituminous mixtures; Compaction; Densitometers; Density; Gamma rays; Hot coated materials; Nondestructive tests; Pneumatic equipment; Rollers; Vibratory equipment
• Uncontrolled Terms: Vibratory rollers
• Old TRIS Terms: Pneumatic rollers; Smooth rollers
• Subject Areas: Highways; Materials;

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