Finite-Element Modelling of Crack Sealant Flexible Pavement

Hassan Ziari; Mahmoud-Reza Keymanesh; Mohammad M. Khabiri

Finite-Element Modelling of Crack Sealant Flexible Pavement

Authors

Hassan Ziari Dept of Civil Engineering, Iran Science and Technology University, Iran
Mahmoud-Reza Keymanesh Iran Road and Transport Research Centre, Iran
Mohammad M. Khabiri Dept of Civil Engineering, Iran Science and Technology University, Vali-Asr Rafsenjan University, Iran

Keywords:

crack sealant, finite element, stress & strain, modelling, flexible pavement, elastic analysis, moving load

Abstract

This paper documents the use of finite element analyses techniques to determine the failure mechanism in a crack sealant pavement under moving loads. The flexible pavement that is modelled is on a medium-strength subgrade. The stress-strain response of the medium soft clay is simulated using an elastic-plastic model. The three-dimensionality of the failure surface under actual wheel loads with wander requires that computationally intensive three-dimensional models is used. The finite element techniques employed are verified against available failure data of the laboratory testing samples. The paper will discuss the advantages and limitations of the crack sealant models that are currently used in pavement analysis. In addition, the paper will also discuss efficient finite-element techniques that can be used for crack sealant pavement analysis that will reduce the computational time without sacrificing accuracy.

References

Chen, D. H.; Zaman, M.; Laguros, J.; Soltani, A. Assessment of Computer Programs for Analysis of Flexible Pavement Structure. Transportation Research Record 1482, TRB, National Research Counsel, Washington DC, 1995, p. 123-133.

Cho, Y-H.; Mccullough, B. F.; Weissman, J. Considerations on Finite Element Method Application in Pavement Structural Analysis. Transportation Research Record 1539, TRB, National Research Counsel, Washington DC, 1996, p. 96-101.

Kuo, C. M.; Hall, K. T., Darter, M. I. Three Dimensional Finite Element Model for Analysis of Concrete Pavement Support. Transportation Research Record 1505, TRB, National Research Counsel, Washington DC, 1995, p. 119-127.

Sukumaran, B.; Kyatham, V.; Shah, A.; Sheth, D. Suitability of Using California Bearing Ratio Test to Predict Resilient Modulus. In FAA Technology Transfer Conference, 2002.

Khabiri, M. M. Development of a Mathematical Model for Increasing Flexible Pavement Life Cycle under Preventive Maintenance. 1st Report of PhD thesis. Iran Science and Technology University, 2006.

Iran Bitumen and Asphalt Association, Technical Guidelines: Construction of Bitumen Mixtures, Bitumen and Asphalt 2nd Conference. Tehran, 2006 (in Persian).

Nazarian, S.; Boddspati, K. M. Pavement-Falling Weight Deflection Interaction Using Dynamic Finite Element Analysis. Transportation Research Record 1482, TRB, National Research Council, Washington DC, 1995, p. 33-43.

Zaghloul, S. M.; White, T. D. Use of a Three-Dimensional, Dynamic Finite Element Program for Analysis of Flexible Pavement. Transportation Research Record 1338, TRB, National Research Council, Washington DC, 1993, p. 60-69.

HKS. ANSYS Theory and Users Manual - Version 6.3, Hibbit, Karlsson & Sorenson, Inc., Pawttucket, Rhode Island, 2002.

Bettes, P. Infinite Elements. Penshaw Press, Sunderland, UK, 2002.

Huang, Y. H. Pavement Analysis and Design. Prentice Hall. Englewood Cliffs, New Jersey, 1993.