Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 32727
Comparison of Elastic and Viscoelastic Modeling for Asphalt Concrete Surface Layer

Authors: Fouzieh Rouzmehr, Mehdi Mousavi


Hot mix asphalt concrete is a viscoelastic material, and its stress-strain relationship depends on the loading duration and the strain rate. To investigate the effect of elastic and viscoelastic modeling under traffic load, asphalt concrete pavement is modeled with both elastic and viscoelastic properties and the pavement performance is predicted. The differences of these two models are investigated on fatigue cracking and rutting problem which are the two main design parameters in flexible pavement design. Although the differences in rutting problem between two models were negligible, in fatigue cracking, the viscoelastic model results were more accurate. Results indicate that modeling the flexible pavement with elastic material is efficient enough and gives the acceptable results.

Keywords: Flexible pavement, asphalt, FEM modeling, viscoelastic, elastic, ANSYS.

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 314


[1] Ferry, J.D., "Viscoelastic properties of polymers", New York: John Wiley and Sons, (1980).
[2] Barnes, H.A., Hutton, J.F., Walters, K., "An introduction to rheology", Amsterdam: Elsevier, (1989).
[3] Airey, G.D., Grenfell, J.R.A., Apeagyei, A., Subhy, A. and Lo Presti, D., "Time-dependent viscoelastic rheological response of pure, modified and synthetic bituminous binders." Mechanics of Time-Dependent Materials (Nottingham Transportation Engineering Centre, University of Nottingham) 20: 455–480, (2016).
[4] Hassan A. Tabatabaee, Raul Velasquez, Hussain U. Bahia., "Modeling Thermal Stress in Asphalt Mixtures Undergoing Glass Transition and Physical Hardening." Transportation Research Record: Journal of the Transportation Research Board 2296: 106–114, (2012).
[5] Nur Izzi Md. Yusoff, Emmanuel Chailleux, and Gordon D. Airey. "A Comparative Study of the Influence of Shift Factor Equations on Master Curve Construction." International Journal of Pavement Research and Technology 4: 324-336, (2011).
[6] Medani, T.O. and Huurman, M. Constructing the Stiffness Master Curves for Asphaltic Mixes. Netherland: Delft University and Technology, (2003).
[7] Jongepier, R. and Kuilman, B. "Characteristics of the Rheology of Bitumens." Proceedings of the Association of Asphalt Paving Technologists 38: 98–122, (1969).
[8] Chailleux, E., Ramond, G., Such, C., and de la Roche, C. "A Mathematical-based Master Curve Construction Method Applied to Complex Modulus of Bituminous Materials." Road Materials and Pavement Design 7: 75–92, (2006).
[9] Narayanaswamy, O.S. "A model of structural relaxation in glass." Journal of the American, (1971).
[10] Imaoka, Sheldon. Analyzing Viscoelastic Materials. Technical Support Engineer, ANSYS, Inc, ANSYS Advantage, (2008).
[11] Monismith, Karl S. Pister and Carl L. Highway Research Board Bulletin 261-Driving Simulators and Application of Electronics to Highways. Washington D. C.: University of California, Berkeley, (1960).
[12] Anton Paar website.
[13] Ameri, M. and Khavandi, A., “Development of mechanistic-empirical flexible pavement design in Iran”, Journal of Applied Sciences, 9(2), pp. 354-359, (2009).