HIGH TEMPERATURE VISCOSITY OF POLYMER AND FILLER MODIFIED BINDER SYSTEMS

This paper describes the influence of polymer type as well as filler type and content on the high temperature viscosity and shear rate dependency of a number of modified binder systems. The viscosity testing was undertaken using a Brookfield (rotational) viscometer and the viscosity data analysed in terms of the material's strain dependency and increased high temperature viscosity as related to the practical usage of the material. The results clearly indicate the increased strain rate dependency (non-Newtonian) behaviour of the filler modified systems compared to the strain independent (Newtonian) behaviour of both the conventional bituminous binders and polymer modified systems. Out of five fillers, hydrated lime was found to cause the largest increase in viscosity although all the fillers had a similar effect in terms of increasing the strain rate dependency of the system. The viscosity versus testing time relationship of the bitumen-filler systems was also studied and showed a sharp reduction in initial viscosity with time with the viscosity finally stabilising after approximately ten minutes. The cause of this shear thinning was attributed to a combination of factors including filler sedimentation, localised heating and the addition torque (force) required initially to mobilise and accelerate the suspended and transported filler particles to a uniform shear rate. For the covering abstract see ITRD E121480.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9080288446
• Corporate Authors:

  FOUNDATION EURASPHALT

  PO BOX 255
  BREUKELEN,     3620 AG
• Authors:
  • Airey, G D
  • WESTWOOD, D
• Publication Date: 2004

Language

• English

Media Info

• Features: References;
• Pagination: p. 1599-608
• Serial:
  • PROCEEDINGS OF THE 3RD EURASPHALT AND EUROBITUME CONGRESS HELD VIENNA, MAY 2004
  • Volume: 2
  • Publisher: FOUNDATION EURASPHALT

Subject/Index Terms

• TRT Terms: Binders; Bitumen; Conferences; Fillers (Materials); Polymers; Temperature; Tests; Viscosity
• ITRD Terms: 4948: Binder; 4963: Bitumen; 8525: Conference; 4599: Filler; 7482: Polymer; 6722: Temperature; 6255: Test; 5936: Viscosity
• Subject Areas: Data and Information Technology;

Filing Info

• Accession Number: 00981007
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 90-802884-4-6
• Files: ITRD
• Created Date: Nov 3 2004 12:00AM