APPLICATION OF THE BROOKFIELD VISCOMETER TEST METHOD IN SOUTH AFRICAN ROAD GRADE BITUMEN SPECIFICATIONS

The basis for the South African specification for normal road grade bitumens has recently changed from penetration to viscosity. The viscosity is determined using the Brookfield viscometer at 60 degrees C and 135 degrees C according to the ASTM test method D4402. This paper discusses the method, its repeatability and reproducibility and setting limits for the specification. The results of a major study covering a number of South African laboratories to investigate the reproducibility of the test are included. To enable the Brookfield results to be correlated with results from other test methods as are used in other countries, a comparison is made between the Brookfield and other viscosity test methods used in the 60 degrees C and 135 degrees C temperature range. (A) For the covering abstract of the conference see IRRD 873950.

Language

  • English

Media Info

  • Features: References;
  • Pagination: V109-V123

Subject/Index Terms

Filing Info

  • Accession Number: 00714419
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Dec 27 1995 12:00AM