STUDY OF CRUMB TIRE RUBBER IN ASPHALT CONCRETE MIXTURES

The aim of this work is to characterize the structural and mechanical behavior of asphalt mixtures when some recycled rubber is added. The basic asphalt mixture is the one commonly used in asphalt pavement; the recycled rubber comes from used tires. The research methodology used made it possible to optimize the rubber addition so the structural behavior of resulting asphalt mixtures is improved when compared to the basic mixture without rubber. The study investigates the effects of the addition of crumb tire rubber in asphalt concrete mixtures. The process of incorporation of rubber is similar to the aggregate-rubber process (dry), but seeking the asphalt-rubber process (wet). The study optimizes the asphalt binder and rubber contents with the aid of the Marshall method. The mixture performance is evaluated with the indirect tensile strength, resilient modulus and fatigue tests on Marshall samples. Pavement design simulation with the experimental mixture shows advantages compared to the conventional mixture.

• Supplemental Notes:
  • Full conference proceedings available on CD-ROM.
• Corporate Authors:

  National Center for Asphalt Technology

  Auburn University, 277 Technology Parkway
  Auburn, AL  United States  36830
• Authors:
  • Momm, L
  • Marcon, A F
  • Salini, R B
• Conference:
  • Second International Symposium on Maintenance and Rehabilitation of Pavements and Technological Control. Segundo Simposio Sobre Manutencao e Rehabilitacao de Pavimentos e Controle Technologico
  • Location: Auburn, Alabama
  • Date: 2001-7-29 to 2001-8-1
• Publication Date: 2001

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 13p

Subject/Index Terms

• TRT Terms: Asphalt concrete; Asphalt mixtures; Asphalt pavements; Asphalt rubber; Crumb rubber; Marshall test; Pavement components; Pavement design; Pavement layers; Pavement maintenance; Paving materials; Reclaimed rubber; Recycled materials; Road materials
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00972437
• Record Type: Publication
• Report/Paper Numbers: 01-029
• Files: TRIS
• Created Date: Apr 30 2004 12:00AM