DEVELOPMENT OF A PHYSICAL PROPERTY SPECIFICATION FOR ASPHALT-RUBBER BINDER (WITH DISCUSSION)

The blending of tire rubber and paving asphalt yielded patented binders which were reported to improve performance relative to standard paving asphalts. Subsequent use of these binders has also been in dense-graded asphalt concrete, and recently in gap-graded asphalt concrete. Caltrans' designation for these types of pavements has been established as asphalt-rubber hot mix-dense graded (ARHM-DG) and asphalt-rubber hot mix-gap graded (ARHM-GG). The performance of the projects incorporating these binders has been inconsistent. A method was needed to provide an understanding of the physical properties that were yielding the desirable performance and be able to quantify them for specification purposes. Rheological analysis of standard paving asphalts and modified asphalts in comparison with field performance data has yielded parameters that are suitable for specification purposes for key performance criteria. Climatic factors reflected in testing temperature and accelerated aging conditions are contained in the perforamnce based asphalt (PBA) grading system and the Strategic Highway Research Program (SHRP) asphalt specification. The approach chosen was to use these parameters and conditions to characterize the asphalt-rubber binders from ARHM-DG and ARHM-GG projects then to compare these properties with performance data to determine the potential of rheological specifications for asphalt-rubber binders for hot mix. The analysis of the hot mix projects is presented by performance criteria, in some cases including control sections of standard asphalts and cores taken after six years.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02702932
• Corporate Authors:

  Association of Asphalt Paving Technologists (AAPT)

  400 Selby Avenue, Suite I
  St Paul, MN  United States  55102
• Authors:
  • Reese, R E
• Conference:
  • Asphalt Paving Technology 1994
  • Location: St. Louis, Missouri
  • Date: 1994-3-21 to 1994-3-23
• Publication Date: 1994-3

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 373-413
• Serial:
  • Journal of the Association of Asphalt Paving Technologists
  • Volume: 63
  • Publisher: Association of Asphalt Paving Technologists (AAPT)
  • ISSN: 0270-2932
  • Serial URL: https://www.asphalttechnology.org/site_page.cfm?pk_association_webpage_menu=9169&pk_association_webpage=19109

Subject/Index Terms

• TRT Terms: Analysis; Asphalt rubber; Binders; Climate; Core samples; Dense graded aggregates; Development; Gap graded aggregates; Hot mix asphalt; Performance; Physical properties; Specifications; Temperature; Testing; Variables
• Old TRIS Terms: Aging; Cores
• Subject Areas: Highways; Materials; Pavements; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00728517
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 25 2000 12:00AM