USE OF RUBBER MODIFIED ASPHALT FOR SNOW AND ICE CONTROL

Rubber-modified asphalt pavements have been used in Sweden and the United States since the late 1960's. Rubber-modified asphalt concrete consists of ground recycled tire rubber particles 6.4 mm (1/4 in. minus) added to a gap graded aggregate and then mixed with hot asphalt cement. This paving system distributed under the trade names "Skega Asphalt", "Rubit" or "Rubtop" in Scandinavia and "PlusRide" in the United States, was found to provide a new form of wintertime ice control because of the increased flexibility and the action of protruding rubber particles. Based on a review of several case histories presented herein, the resultant paving mixture appears to have the following important characteristics for cold regions applications: (1) improved resistance to load induced tensile cracking and low temperature thermal contraction cracking; (2) improved skid resistance under ice conditions; (3) good resistance to studded tires and/or chains; and (4) reduced tire noise levels. Observations of the skid reduction benefits under icy road conditions have been made with a Tapley Brake Meter in the United States. Tests by the Alaska Department of Transportation and Public Facilities indicate that significant reductions in city road stopping distances nearly always resulted from the use of the rubber modified asphalt paving system. For 21 testing dates over three winters, stopping distances were reduced by an average of 25 percent. The effectiveness of rubber modified asphalt concrete ("Rubit") has been investigated by Swedish road authorities in several field investigations. The field observations indicated the accidents related to surface frost have been completely eliminated in the areas with rubber modified asphalt pavement. For the covering abstract of the conference see IRRD 832707. (A)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03476030
• Corporate Authors:

  Swedish National Road and Transport Research Institute (VTI)

  Linköping,   Sweden  SE-581 95
• Authors:
  • Takallou, H
  • Hicks, G
  • Takallou, M
• Publication Date: 1990

Language

• English

Media Info

• Pagination: p. 49-68
• Serial:
  • VTI Rapport
  • Issue Number: 352A
  • Publisher: Swedish National Road and Transport Research Institute (VTI)
  • ISSN: 0347-6030

Subject/Index Terms

• TRT Terms: Bituminous mixtures; Black ice; Braking performance; Conferences; Construction management; Cracking; Crash rates; Durability; Flexible pavements; Gap graded aggregates; Mix design; Modulus of elasticity; Rolling contact; Rubber; Skid resistance; Sound level; Studded tires; Tests
• Identifier Terms: Strategic Highway Research Program
• ITRD Terms: 1612: Accident rate; 4967: Bituminous mixture; 2567: Black ice; 1695: Braking distance; 8525: Conference; 3666: Construction method; 5440: Contact (tyre road); 5211: Cracking; 5910: Durability; 2944: Flexible pavement; 4597: Gap graded aggregate; 4714: Mix design; 5919: Modulus of elasticity; 7494: Rubber; 9122: SHRP; 3031: Skid resistance; 6747: Sound level; 1382: Studded tyre; 6255: Test
• Subject Areas: Construction; Data and Information Technology; Highways;

Filing Info

• Accession Number: 00607080
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS, ATRI
• Created Date: Mar 31 1991 12:00AM