Effect of Reclaimed Asphalt Pavement Content and Binder Grade on Fatigue-Resisting Performance of Asphalt Mixtures in Georgia

This paper examines the effects of reclaimed asphalt pavement (RAP) content and binder grade on the fatigue resistance of Georgia asphalt concrete mixtures. The asphalt concrete mixtures were prepared based on two job mix formulas used in northern and southern Georgia and were composed of 12.5-mm nominal maximum aggregate size aggregate and three asphalt binders (PG 64-22, PG 67-22, and PG 76-22). Dynamic modulus and controlled crosshead cyclic tension fatigue tests were performed using the laboratory-prepared specimens. A simplified viscoelastic continuum damage (S-VECD) model was characterized for each mixture using the dynamic modulus and fatigue test results. The layered viscoelastic pavement analysis for critical distresses (LVECD) program was used to investigate the effects of RAP content and binder grade on the fatigue performance of pavements. The S-VECD model and LVECD program analyses showed that the addition of RAP up to 30% using corrected optimum asphalt content (COAC) method significantly improved the mixtures’ fatigue resistance, especially for the mixtures with PG 64-22 and PG 67-22 binders.

• Record URL:
  https://doi.org/10.1061/(ASCE)MT.1943-5533.0001960
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08991561
• Supplemental Notes:
  • © 2017 American Society of Civil Engineers.
• Authors:
  • Norouzi, Amirhossein
  • Kim, Y Richard
  • Kim, S Sonny
  • Yang, Jidong
• Publication Date: 2017-9

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: 04017115
• Serial:
  • Journal of Materials in Civil Engineering
  • Volume: 29
  • Issue Number: 9
  • Publisher: American Society of Civil Engineers
  • ISSN: 0899-1561
  • EISSN: 1943-5533
  • Serial URL: http://ascelibrary.org/journal/jmcee7

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Binder content; Dynamic modulus of elasticity; Fatigue strength; Reclaimed asphalt pavements; Tension tests; Viscoelasticity
• Geographic Terms: Georgia
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 01633766
• Record Type: Publication
• Files: TRIS, ASCE
• Created Date: May 1 2017 9:35AM