CHARACTERISTICS OF ASPHALT-RUBBER BY THE SLIDING PLATE MICROVISCOMETER

Asphalt-rubber is defined as a mixture of asphalt cement, granulated reclaimed tire rubber, and certain other additives. It is distinguished from a material generally termed rubberized asphalt in that asphalt-rubber contains a higher amount of granulated rubber (15-25% by weight) than rubberized asphalt (1-3% by weight). In recent years, asphalt-rubber materials use has been increasing as they have proven useful in various pavement maintenance functional applications including binders for asphalt concrete, low modulus stress absorbing membranes and stress absorbing membrane interlayers, and crack and joint sealers for both asphalt and portland cement concrete pavements. When granulated reclaimed tire rubber and asphalt are mixed at high temperatures, rubber particles may swell to at least twice their original volume which, in turn, results in an increase in viscosity of the asphalt-rubber mixture. In order to examine this phenomenon, a statistically designed and analyzed lab experiment, which characterized asphalt-rubber mixtures formulated with 6 different rubbers at 4 different concentrations and 2 asphalts, was performed. These mixtures were tested at 0 deg C using a creep-strain recovery procedure with the sliding plate microviscometer, and the findings are discussed herein.

• Corporate Authors:

  Association of Asphalt Paving Technologists (AAPT)

  400 Selby Avenue, Suite I
  St Paul, MN  United States  55102
• Authors:
  • Chehovits, J G
  • Dunning, R L
  • Morris, G R
• Conference:
  • Association of Asphalt Paving Technologists Proceedings
• Publication Date: 1982

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 240-261
• Serial:
  • Volume: 51

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Asphalt pavements; Asphalt rubber; Asphalt tests; Bituminous materials; Highway engineering; Highway transportation; Pavement components; Pavement maintenance; Reclaimed rubber; Recycled materials; Road materials; Swelling; Viscometers
• Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials; I33: Other Materials used in Pavement Layers;

Filing Info

• Accession Number: 00930928
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 23 2002 12:00AM