Flexible Pavement Analysis Considering Temperature Profile and Anisotropy Behavior in Hot Mix Ashalt Layer

Joonho Choi, Youngguk Seo, Sung-Hee Kim, Samuel Beadles

.

DOI: 10.4236/ojce.2011.12002                

Abstract

A three Dimensional finite element model (FEM) incorporating the anisotropic properties and temperature profile of hot mix asphalt (HMA) pavement was developed to predict the structural responses of HMA pavement subject to heavy loads typically encountered in the field. In this study, ABAQUS was adopted to model the stress and strain relationships within the pavement structure. The results of the model were verified using data collected from the Korean Highway Corporation Test Road (KHCTR). The results demonstrated that both the base course and surface course layers follow the anisotropic behavior and the incorporation of the temperature profile throughout the pavement has a substantial effect on the pavement response predictions that impact pavement design. The results also showed that the anisotropy level of HMA and base material can be reduced to as low as 80% and 15% as a result of repeated loading, respectively.

Keywords

Anisotropic Behavior, Finite Element Method, Aggregate Base, HMA

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	S. H. Kim, D. N. Little and E. Tutumluer, “Validated Model for Predicting Field Performance of Aggregate Base Courses,” Transportation Research Record 1873, 2003.
[2]	S. H. Kim, D. N. Little and E. Masad, “Simple Methods to Estimate Inherent and Stress-Induced Anisotropic Level of Aggregate Base,” Transportation Research Record 1913, TRB, National Research Council, Washington DC, 2005, pp. 24-31.
[3]	S. H. Kim, D. N. Little and E. Tutumluer, “Effect of Gradation on Nonlinear Stress-Dependent Behavior of a Sandy Flexible Pavement Subgrade,” Journal of Transportation Engineering, Vol. 133, No. 10, 2007, pp. 582- 589. doi:10.1061/(ASCE)0733-947X(2007)133:10(582)
[4]	E. Tutumluer, D. N. Little and S. H. Kim, “Validated Model for Predicting Field Performance of Aggregate Base Courses,” Transportation Research Record 1837, TRB, National Research Council, Washington DC, 2003, pp. 41-49.
[5]	B. K. Diefenderfer, I. L. Al-Qadi and S. D. Diefenderfer, “Model to Predict Pavement Temperature Profile: Development and Validation,” Journal of Transportation Engineering, Vol. 132, No. 2, 2006, pp. 162-167. doi:10.1061/(ASCE)0733-947X(2006)132:2(162)
[6]	J. J. Dong and Y. W. Pan, “Micromechanics Model for Elastic Stiffness of Non-Spherical Granular Assembly,” International Journal for Numerical and Analytical Methods in Geomechanics, Vol. 23, 1999, pp. 1075-1100. doi:10.1002/(SICI)1096-9853(199909)23:11<1075::AID-NAG24>3.0.CO;2-S
[7]	Y. Seo, “Distress Evolution in Highway Flexible Pavements: A 5-Year Study at the KHC Test Road,” ASTM Journal of Testing and Evaluation, Vol. 38, No. 1, 2010, pp. 32-41.
[8]	Y. Seo, “A Full Scale in Situ Evaluation of Strain Characteristics at Highway Flexible Pavement Sections,” ASTM Journal of Testing and Evaluation, Vol. 38, No. 4, 2010, pp. 390-399.
[9]	Korea Highway Corporation, “A Study on the Construction and Management of Korea Highway Test Road,” Final Report, 2002.