A COMPARATIVE STUDY OF SBS AND TPO BASED PMB

SBS thermoplastic rubbers and heterophasic polyolefins (TPO) are two different types of polymers which were previously found to be good modifiers of bitumen for road applications. The two polymer types showed different behaviour when submitted to tensile tests after ageing; in particular, SBS polymers showed lower resistance to thermal degradation in comparison with heterophasic copolymers (elastic recovery after aging data from tension set tests). In PMBs, both of them behaved properly at low and high temperatures, with rSBS-modified blend showing a better storage stability than TPO-modified binders. The present conclusive work deals with some mechanical characterisation at low temperatures: the two PMBs and the pure bitumen have been averaged (RTFOT modified conditions) and then subjected to tensile tests between -10 and +10 degrees C. Moreover, Tg of the same samples has been determined through a dynamic mechanical test. Apart from the characterisation issues, this work attempts to draw an overall conclusion out of our ten year's experiences in this field. For the covering abstract see ITRD E107185.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9080288438
• Corporate Authors:

  FOUNDATION EURASPHALT

  PO BOX 255
  BREUKELEN,     3620 AG
• Authors:
  • BRAGA, V
  • CORRIERI, R
• Conference:
  • PROCEEDINGS OF THE PAPERS SUBMITTED FOR REVIEW AT 2ND EURASPHALT AND EUROBITUME CONGRESS, HELD 20-22 SEPTEMBER 2000, BARCELONA, SPAIN. BOOK 2 - SESSION 2
• Publication Date: 2000

Language

• English

Media Info

• Features: References;
• Pagination: p. 60-5

Subject/Index Terms

• TRT Terms: Bitumen; Evaluation and assessment; Polymers; Properties of materials; Tests
• ITRD Terms: 4963: Bitumen; 9020: Evaluation (assessment); 7482: Polymer; 5925: Properties; 6255: Test
• Subject Areas: Materials; Planning and Forecasting;

Filing Info

• Accession Number: 00804246
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 90-802884-3-8
• Files: ITRD, ATRI
• Created Date: Jan 5 2001 12:00AM