[1] Wang Jiangyang, Qian Zhendong,. Indirect tension test of epoxy asphalt mixtureusing microstructural finite-element model [J]. Journal of Southeast University (English Edition), 2011, 27 (1): 65-69. [doi:10.3969/j.issn.1003-7985.2011.01.014]

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Indirect tension test of epoxy asphalt mixtureusing microstructural finite-element model()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

27

Issue:

2011 1

Page:

65-69

Research Field:

Traffic and Transportation Engineering

Publishing date:

2011-03-30

Info

Title:

Indirect tension test of epoxy asphalt mixtureusing microstructural finite-element model

Author(s):

Wang Jiangyang;  Qian Zhendong

Intelligent Transportation System Research Center, Southeast University, Nanjing 210096, China

Keywords:

microstructure;  epoxy asphalt mixture;  image techniques;  finite-element model;  indirect tension test

PACS:

U443.33

DOI:

10.3969/j.issn.1003-7985.2011.01.014

Abstract:

A finite-element model of the thermosetting epoxy asphalt mixture(EAM)microstructure is developed to simulate the indirect tension test(IDT). Image techniques are used to capture the EAM microstructure which is divided into two phases: aggregates and mastic. A viscoelastic constitutive relationship, which is obtained from the results of a creep test, is used to represent the mastic phase at intermittent temperatures. Model simulation results of the stiffness modulus in IDT compare favorably with experimental data. Different loading directions and velocities are employed in order to account for their influence on the modulus and the localized stress of the microstructure model. It is pointed out that the modulus is not consistent when the loading direction changes since the heterogeneous distribution of the mixture internal structure, and the loading velocity affects the localized stress as a result of the viscoelasticity of the mastic. The study results can provide a theoretical basis for the finite-element method, which can be extended to the numerical simulations of asphalt mixture micromechanical behavior.

References:

[1] You Z, Dai Q. Dynamic complex modulus predictions of hot-mix asphalt using a micromechanical-based finite element model [J]. Canadian Journal of Civil Engineering, 2007, 34(12): 1519-1528.
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[3] Kose S, Guler M, Bahia H U, et al. Distribution of strains within hot-mix asphalt binders [J]. Transportation Research Record, 2000, 1391:21-27.
[4] Yu J M, Li X J, Wang D Y, et al. Finite element modeling of asphalt mix with x-ray computerized tomography processing [J]. Journal of Chang’an University: Natural Science Edition, 2006, 26(1): 16-19.(in Chinese)
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[6] Papagiannakis A T, Abbas A R, Masad E A. Micromechanical analysis of viscoelastic properties of asphalt concretes [J]. Transportation Research Record, 2002, 1789: 113-120.
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[8] Abbas A. Simulation of micromechanical behavior of asphalt mixtures using discrete-element method [D]. Pullman, WA, USA: Department of Civil and Environmental Engineering of Washington State University, 2004.
[9] Huang W. Theory and method of deck paving design for long-span bridges[M]. Beijing: China Construction Industry Press, 2006.(in Chinese)
[10] Wang H N. Research on numerical simulation of the asphalt mixture microstructure [D]. Xi’an: Highway School of Chang’an University, 2007.(in Chinese)
[11] Ministry of Communications. JTJ 052—2000 Standard test methods of bitumen and bituminous mixtures for highway engineering [S]. Beijing: China Communications Press, 2000.(in Chinese)
[12] Dai G. Research on the performance of diabase used in the epoxy asphalt mixture [D]. Nanjing: School of Transportation of Southeast University, 2010.(in Chinese)

Memo

Memo:

Biographies: Wang Jiangyang(1985—), male, graduate; Qian Zhendong(corresponding author), female, doctor, professor, qianzd@seu.edu.cn.
Foundation items: Program for New Century Excellent Talents in University(No.NCET-08-0118), Specialized Research Fund for the Doctoral Program of Higher Education(No.20090092110049).
Citation: Wang Jiangyang, Qian Zhendong. Indirect tension test of epoxy asphalt mixture using microstructural finite-element model[J].Journal of Southeast University(English Edition), 2011, 27(1):65-69.[doi:10.3969/j.issn.1003-7985.2011.01.014]

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