FATIGUE PERFORMANCE OF ASPHALT MIXTURES CONTAINING RECYCLED POLYMER-MODIFIED CEMENTS

This paper presents the fatigue performance of asphalt mixtures containing recycled polymer modified asphalt cement (PMAC). A styrene-butadiene-styrene PMAC was selected and characterized using the Superpave PG protocol. An eight year old PMAC was extracted from a wearing course mixture located in US61 Hwy, Livingston Parish, Louisiana. Blends of various percentages of the US61 recovered binder and original PMAC were prepared and analyzed. These blends were characterized with respect to their thermal and rheological properties. The recovered binders from field aged mixtures, which exhibited a Tg ~ 5C, was quite brittle at low temperature. A 19 mm Superpave mixture containing blends of virgin PMAC with various percentages of US61 recovered binder and original aggregates was evaluated for their fatigue resistance as measure by beam fatigue and indirect tensile strength tests. Test results showed that the mixtures' fatigue resistance decreased with an increase in the percentage of US61 binder. The fatigue parameter of G*sin( ) presented good correlation to the results of mixture performance tests.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/972869203X
• Supplemental Notes:
  • Conference Proceedings also available on CD-ROM.
• Corporate Authors:

  Universidade do Minho, Portugal

  Escola de Engenharia, Azurem
  P-4800-058 Guimaraes, ZZ Portgual   
• Authors:
  • Mohammad, L
  • Wu, Zhizhou
  • Daly, W
  • Neglescu, I
• Conference:
  • Maintenance and Rehabilitation of Pavements and Technological Control
  • Location: University of Minho, Guimaraes, Portugal
  • Date: 2003-7-7 to 2003-7-10
• Publication Date: 2003

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 10p

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Binder content; Blends; Fatigue (Mechanics); Recycled materials; Rheological properties; Styrene butadiene rubber; Wearing course (Pavements)
• Geographic Terms: Louisiana
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00967228
• Record Type: Publication
• ISBN: 972869203X
• Files: TRIS
• Created Date: Dec 17 2003 12:00AM