Modeling of Asphalt Mixture Laboratory and Field Compaction Using a Thermodynamics Framework

This paper presents a model that was developed within the context of a thermomechanical framework, for the compaction of asphalt mixtures. The asphalt mixture is modeled as a nonlinear compressible material exhibiting time-dependent properties. A numerical scheme, based on finite elements, is employed to solve the equations governing compaction mechanisms. Due to the difficulty of conducting tests on the mixture at the compaction temperature, a procedure was developed to determine the model’s parameters from the analysis of the Superpave gyratory compaction (SGC) curves. A number of mixtures were compacted in the SGC using an angle of 1.25° in order to determine the model’s parameters. Consequently, the model was used to predict the compaction curves of mixtures compacted using a 2° angle of gyration. The model compared reasonably well with the SGC compaction curves. Finite element simulations of the compaction of a pavement section using a roller compactor were conducted in this study. The results demonstrated the potential of the material model to represent asphalt mixture field compaction. The developed model is a useful tool for simulating the compaction of asphalt mixtures under laboratory and field conditions. In addition, it can be used to determine the influence of various material properties and mixture designs on model’s parameters and mixture compactability.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02702932
• Authors:
  • Masad, Eyad A
  • Koneru, Saradhi
  • Rajagopal, K R
  • Scarpas, Tom
  • Kasbergen, Cor
• Conference:
  • Asphalt Paving Technology 2009
  • Location: Minneapolis MN, United States
  • Date: 2009-3-15 to 2009-3-18
• Publication Date: 2009

Language

• English

Media Info

• Media Type: Print
• Features: CD-ROM; Figures; References; Tables;
• Pagination: pp 639-678
• Serial:
  • Journal of the Association of Asphalt Paving Technologists
  • Volume: 78
  • 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; Compaction; Field tests; Finite element method; Laboratory tests; Superpave; Thermal properties; Thermodynamics
• Uncontrolled Terms: Gyratory compaction
• Subject Areas: Highways; Materials; Pavements; I33: Other Materials used in Pavement Layers;

Filing Info

• Accession Number: 01158677
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 11 2010 12:05PM