DETERMINATION OF BINDER CONTENT BY A RADIOMETRIC METHOD AND BY EXTRACTION. A COMPARISON

BESTAEMNING AV BINDEMEDELSHALT ENLIGT RADIOMETRISK METOD OCH GEONOM EXTRAKTION. EN JAEMFOERELSE

This report is a study of a nuclear bitumen content meter bimo-3 primarily intended for production control in asphalt mixing plants. The measurement is quick and comparatively accurate. The influence of external disturbances was studied at the same time as a great variation in measuring objects could be achieved. Two types of bituminous mixtures mab16t and mab12t (200 pen bitumen, dense graded, maximum particle size 16 and 12 mm, respectively) were used in a comparison between the nuclear method and the extraction method. In a study of the influence of aggregate type an additional mixture denoted hab16s was used, this being an extremely open graded mix. The study confirmed the greater capacity of the nuclear method. Comparison of ten samples of hab16t gave satisfactory agreement between the nuclear method and the extraction method. Without correction the largest difference was 0.28 per cent by weight between corresponding values. Ten samples of mab12t gave a larger discrepancy, the largest difference being 0.40 per cent by weight. In the comparison applied to samples of varying aggregate origin and specific gravity the mix type mab16t gave satisfactorily small differences, whereas the open graded mix showed larger differences. (TRRL)

  • Corporate Authors:

    Royal Institute of Technology, Sweden

    Institutionen foer Vaegbyggnad, Fack S-10044
    Stockholm 70,   Sweden 
  • Authors:
    • Ulander, H
    • Cramnert, C G
  • Publication Date: 1978

Language

  • Swedish

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 57 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00302537
  • Record Type: Publication
  • Source Agency: Swedish National Road and Transport Research Institute (VTI)
  • Report/Paper Numbers: Bulletin 1978:5 Monograph
  • Files: ITRD, TRIS
  • Created Date: Feb 11 1980 12:00AM