POLYOLEFINIC POLYMERS FOR THE PRODUCTION OF HIGHLY STABLE MODIFIED BITUMENS

Recently a wide spectrum of modifying polymeric materials have been test mixed with the bitumens used in road construction; among them, a new class of heterophasic polyolefin copolymers which show little stability when mixed with certain bitumens, especially when stored for long periods at high temperatures. The problem can be solved by adding phosphorous compounds, especially polyphosphoric acid, which shift the bitumen structure from sol to gel. In fact, it was demonstrated that the stability of polymer modified bitumens depends not only on the difference in density and viscosity between bitumen and polymer, but also on bitumen structure. For the covering abstract see IRRD 885061.

• Corporate Authors:

  European Asphalt Pavement Association

  P.O. Box 175
  3620 AD Breukelen,   Netherlands 

  EUROBITUME (EUROPEAN BITUMEN ASSOCIATION)

  PLACE MADOU 1, TOUR MADOU, 25TH FLOOR
  BRUSSELS,   Belgium  1030
• Authors:
  • GIAVARINI, C
  • DE FILIPPIS, P
  • SANTARELLI, M L
  • SCARSELLA, M
• Conference:
  • EURASPHALT & EUROBITUME CONGRESS, STRASBOURG, 7-10 MAY 1996. VOLUME 3. PAPER E&E.6.163
• Publication Date: 1996

Language

• English

Media Info

• Features: References;
• Pagination: 10 p.

Subject/Index Terms

• TRT Terms: Bitumen; Colloids; Conferences; Phosphoric acid; Polymers; Stability (Mechanics)
• Uncontrolled Terms: Modifications
• ITRD Terms: 4963: Bitumen; 7175: Colloid; 8525: Conference; 9048: Modification; 7330: Phosphoric acid; 7482: Polymer; 5930: Stability
• Subject Areas: Data and Information Technology;

Filing Info

• Accession Number: 00738190
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Jul 30 1997 12:00AM