TEST METHOD FOR "ELASTRA" SYNTHETIC RUBBER DETERMINATION IN RUBBERIZED ASPHALT PAVEMENTS

This is a preprint of a paper presented at the International Symposium on the Use of Rubber in Asphalt Pavements, Salt Lake City, Utah, May 1971. After a critical examination of the most important analytical methods of determining the rubber content of asphalt, two methods for the determination of "Elastra 103" content in rubberized asphalts consisting of mineral aggregates, fillers, bitumen and "Elastra" are described. The first method involves methylene chloride extraction of the organic components from the asphalt and subsequent infrared analysis of the bitumen-"Elastra" mixture. The second method is based on asphalt pyrolysis under strictly controlled temperature and time conditions, followed by infrared analysis of the liquid pyrolyzate. In both cases the "Elastra" concentration is derived from calibration curves obtained by means of analysis of Bitumen-"Elastra" mixtures and rubberized asphalt prepared in the laboratory and containing known "Elastra" amounts. The two proposed methods were used for analysis of commercial rubberized asphalts and the results were found to be fully satisfactory. /TRRL/

  • Supplemental Notes:
    • Preprint of a paper presented at the International Symposium on the Use of Rubber in Asphalt Pavements, Salt Lake City, May 1971.
  • Corporate Authors:

    Laboratorio Sviluppo Applicazioni Prod

    Milan,   Italy 
  • Authors:
    • D'Amico, F
    • Serboli, G
    • Vergaro, A
  • Publication Date: 0

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 27 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00083177
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Conf Paper
  • Files: ITRD, TRIS
  • Created Date: Jul 2 1975 12:00AM