[1] Zhang Deyu, Huang Xiaoming, Gao Ying,. Virtual rutting test of asphalt mixtureusing discrete element method [J]. Journal of Southeast University (English Edition), 2012, 28 (2): 215-220. [doi:10.3969/j.issn.1003-7985.2012.02.015]

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Virtual rutting test of asphalt mixtureusing discrete element method()

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

Volumn:

28

Issue:

2012 2

Page:

215-220

Research Field:

Traffic and Transportation Engineering

Publishing date:

2012-06-30

Info

Title:

Virtual rutting test of asphalt mixtureusing discrete element method

Author(s):

Zhang Deyu;  Huang Xiaoming;  Gao Ying

School of Transportation, Southeast University, Nanjing 210096, China

Keywords:

asphalt mixture;  permanent deformation;  discrete element method;  virtual rutting test

PACS:

U414

DOI:

10.3969/j.issn.1003-7985.2012.02.015

Abstract:

In order to investigate the permanent deformation behavior of asphalt mixtures from discontinuity, the virtual rutting test of asphalt mixtures is developed by the discrete element method(DEM). A digital specimen generation procedure considering aggregate gradation and irregular shape is developed based on the probability theory and the Monte Carlo method. The virtual rutting test is then conducted based on the generated digital specimen. In addition, on the basis of the time-temperature superposition(TTS)principle, a calculation method is used to reduce the computation time of the virtual rutting test. The simulation results are compared with the laboratory measurements. The results show that the calculation method based on the TTS principle in the discrete element(DE)viscoelastic model can significantly reduce the computation time. The deformation law of asphalt mixtures in the virtual rutting test is similar to the laboratory measurements, and the deformation and the dynamic stability of the virtual rutting test are slightly greater than the laboratory measurements. The two-dimensional virtual rutting test can predict the permanent deformation performance of asphalt mixtures.

References:

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[7] Abbas A, Masad E, Papagiannakis T, et al. Micromechanical modeling of the viscoelastic behavior of asphalt mixtures using the discrete-element method [J]. International Journal of Geomechanics, 2007, 7(2): 131-139.
[8] Kim H, Wagoner W P, Buttlar W G. Simulation of fracture behavior in asphalt concrete using a heterogeneous cohesive zone discrete element model [J]. Journal of Materials in Civil Engineering, 2008, 20(8):552-563.
[9] Saltykov S A. Stereometric metallography [M]. Moscow: State Publishing House for Metals and Sciences, 1958.
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[11] Liu Y, Dai Q L, You, Z P. Viscoelastic model for discrete element simulation of asphalt mixtures [J]. Journal of Engineering Mechanics, 2009, 135(4): 324-333.
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[13] Ministry of Transport of the People’s Republic of China. JTJ 052—2000 Standard test methods of bitumen and bituminous mixtures for highway engineering [S]. Beijing: China Communications Press, 2000.(in Chinese)

Memo

Memo:

Biographies: Zhang Deyu(1986—), male, graduate; Huang Xiaoming(corresponding author), male, doctor, professor, huangxm@seu.edu.cn.
Foundation item: The National Natural Science Foundation of China(No.51108081).
Citation: Zhang Deyu, Huang Xiaoming, Gao Ying. Virtual rutting test of asphalt mixture using discrete element method[J].Journal of Southeast University(English Edition), 2012, 28(2):215-220.[doi:10.3969/j.issn.1003-7985.2012.02.015]

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