Compressive Deformation Behaviour of Asphalt Mixtures (With Discussion)

The compressive deformation behaviour of Dense Bitumen Macadam (DBM) and Hot Rolled Asphalt (HRA) asphalt mixtures is investigated over a wide range of strain-rates, stresses and temperatures under uniaxial and triaxial monotonic and cyclic compressive conditions. The response of the mixtures was found to be described well by a constitutive phenomenological model recently proposed by Ossa et al. The steady-state monotonic behavior of the mixtures followed the modified Cross model with the mixtures exhibiting linear and nonlinear viscous behaviour at low and high stresses, respectively. Both loading and recovery responses were observed to be temperature dependent with the WLF relation capturing the temperature behaviour over the range of temperatures tested. The dilation gradient s was found to play an important role in the deformation behaviour of the mixtures studied. A higher dilation gradient increases the stiffening effect of the confining pressure and reduces the strain to reach tertiary creep. The recovery behaviour of the DBM mixtures was found to be different compared to the HRA mixtures which is thought to be due to the development of internal damage. Research into the causes and implications of this behaviour is proposed as a topic which merits further research.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02702932
• Authors:
  • Ossa, E A
  • Taherkhani, H
  • Collop, A C
• Discussers:
  • Ebels, Lucas
  • Rowe, Geoffrey
  • Gibson, Nelson
• Conference:
  • 2006 Journal of the Association of Asphalt Paving Technologists: From the Proceedings of the Technical Sessions
  • Location: Savannah Georgia, United States
  • Date: 2006-3-27 to 2006-3-29
• Publication Date: 2006

Language

• English

Media Info

• Media Type: Print
• Features: CD-ROM; Figures; References; Tables;
• Pagination: pp 677-712
• Serial:
  • Journal of the Association of Asphalt Paving Technologists
  • Volume: 75
  • Publisher: Association of Asphalt Paving Technologists (AAPT)
  • ISSN: 0270-2932
  • Serial URL: https://www.asphalttechnology.org/site_page.cfm?pk_association_webpage_menu=9169&pk_association_webpage=19109

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Biaxial stress; Bituminous macadam; Confining pressure; Creep; Deformation; Strain (Mechanics); Stresses; Temperature; Uniaxial stress; Viscous flow
• Uncontrolled Terms: Compressive deformation; Constitutive models; Dense bitumen macadam; Hot rolled asphalt; Stiffening; Strain rate
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01041425
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 30 2007 1:29PM