DETERMINATION OF THE BULK DENSITY OF BITUMINOUS MIXTURES DURING APPLICATION BY RADIOACTIVE METHOD

DETERMINATION DU POIDS SPECIFIQUE APPARENT DES ENROBES HYDROCARBONES PAR VOIE RADIOACTIVE EN COURS DE MISE EN OEUVRE

The gamma ray back-scattering measuring technique was experimentally applied with a view to evaluating the efficiency of the compaction of hot-coated materials, -4 to 7cm thick; with this aim in view the bulk density was measured. A patented device was developed to simplify this type of technique on the construction site. The measuring apparatus can be affixed directly on the compacting machine, and it is fitted with an automatic system for taking measurements. This non-destructive test takes a minimum of thirty seconds. During that time, the gauge continuously tests the layer being compacted. The statistical significance (95%) of the results obtained is equal to more or less 0.08 grammes per cubic centimeter, in the range of 2.2 to 2.45 grammes per cubic centimeter. This type of test facilitates the determination of the number of passes beyond which the state of compaction ceases to evolve, and it gives a rapid evaluation of the bulk density of the layers being laid. /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00401277
• Corporate Authors:

  Association Permanente des Congres Belges de Route

  49 avenue d'Auderghem
  Brussels 4,   Belgium 
• Authors:
  • Gorksi, M B
• Publication Date: 1975-6

Language

• French

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 1-27
• Serial:
  • Technique Routiere
  • Volume: 20
  • Issue Number: 2
  • Publisher: Association Permanente des Congres Belges de Route
  • ISSN: 0040-1277

Subject/Index Terms

• TRT Terms: Backscattering; Bituminous mixtures; Bulk density; Compaction; Continuous structures; Density; Diffusion (Optics); Gamma rays; Hot coated materials; Measurement; Measuring instruments; Nondestructive tests; Pavement layers; Rollers; Soil compaction test
• Uncontrolled Terms: Quick
• Old TRIS Terms: Compaction tests
• ITRD Terms: 6155: Apparatus (measuring); 3686: Compaction; 5904: Compaction (state of); 9006: Continuous; 5908: Density; 6769: Diffusion; 4997: Hot coated material; 6136: Measurement; 6216: Non destructive testing; 9064: Quick; 3684: Roller
• Subject Areas: Construction; Highways; Materials; I31: Bituminous Binders and Materials; I52: Construction of Pavements and Surfacings;

Filing Info

• Accession Number: 00157459
• Record Type: Publication
• Source Agency: Road Research Centre, Belgium
• Report/Paper Numbers: Analytic
• Files: ITRD, TRIS
• Created Date: Nov 23 1977 12:00AM