[1] Chen Jun, Huang Xiaoming,. Virtual fracture test of asphalt mixturebased on discrete element method [J]. Journal of Southeast University (English Edition), 2009, 25 (4): 518-522. [doi:10.3969/j.issn.1003-7985.2009.04.021]

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Virtual fracture test of asphalt mixturebased on discrete element method()

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

Volumn:

25

Issue:

2009 4

Page:

518-522

Research Field:

Traffic and Transportation Engineering

Publishing date:

2009-12-30

Info

Title:

Virtual fracture test of asphalt mixturebased on discrete element method

Author(s):

Chen Jun;  Huang Xiaoming

School of Transportation, Southeast University, Nanjing 210096, China

Keywords:

asphalt mixture;  fracture;  discrete element method;  virtual test

PACS:

U414

DOI:

10.3969/j.issn.1003-7985.2009.04.021

Abstract:

In order to study fracture behaviors of asphalt mixtures, virtual tests of the two-dimensional(2D)microstructure based on the discrete element method(DEM)are designed. The virtual structure of the 2D digital specimen of asphalt mixture is generated based on a particle generation program, in which the gradation and the irregular shapes of aggregates are considered. With the 2D digital specimens, a DEM-based mixture model is established and center-point beam fracture simulation tests are conducted by the DEM. Meanwhile, a series of calibration tests are carried out in laboratory to evaluate the DEM model and validate the methods of virtual fracture tests. The test results indicate that the fracture intensity of asphalt mixtures predicted by the DEM matches very well with the intensity obtained in laboratory. It is concluded that the microstructural virtual tests can be used as a supplemental tool to evaluate fracture properties of asphalt mixtures.

References:

[1] Birgisson B, Sangpetngam B, Roque R. Predicting viscoelastic response and crack growth in asphalt mixtures with the boundary element method[J]. Transportation Research Board, 2002(1789): 129-135.
[2] Sadd M H, Dai Q, Parameswaran V, et al. Simulation of asphalt materials using a finite element micromechanical model with damage mechanics[J]. Transportation Research Board, 2003(1832): 86-95.
[3] Rothenburg L, Bogobowicz A, Hass R, et al. Micromechanical modeling of asphalt concrete in connection with pavement rutting problems[C]//Proceedings of the 7th International Conference on Asphalt Pavements. Ann Arbor, Michigan, USA, 1992: 230-245.
[4] Chang K G, Meegoda J N. Micromechanical simulation of hot mix asphalt[J]. J Eng Mech, 1997, 123(5): 495-503.
[5] Zhong X, Chang C S. Micromechanical modeling for behavior of cementitious granular materials[J]. J Eng Mech, 1999, 125(11): 1280-1285.
[6] Trent B C, Margolin L G. Modeling fracture in cemented granular materials[C]//Proceedings of the ASCE National Convention. Atlanta, GA, USA, 1994: 54-69.
[7] Buttlar W G, You Z P. Discrete-element modeling of asphalt concrete: a micro-fabric approach[J]. Transportation Research Board, 2001(1757): 111-118.
[8] Ullidtz P. A study of failure in cohesive particulate media using the discrete element method[C]//Proceedings of the 80th Transportation Research Board Meeting. Washington, DC, USA, 2001: 7-11.
[9] You Z P, Buttlar W G. Discrete element modeling to predict the modulus of asphalt concrete mixtures[J]. Journal of Materials in Civil Engineering, 2004, 16(2): 140-144.
[10] You Z P. Development of a micromechanical modeling approach to predict asphalt mixture stiffness using the discrete element method[D]. Illinois, USA: Department of Civil and Environmental Engineering of the University of Illinois at Urbana-Champaign, 2003.
[11] DeHoff R T, Rhines F N. Quantitative microscopy[M]. New York: McGraw Hill, 1968.
[12] Zhang P. Microstructure generation of asphalt concrete and lattice modeling of its cracking behavior under low temperature[D]. North Carolina, USA: Department of Civil, Construction, and Environmental Engineering of North Carolina State University, 2003.

Memo

Memo:

Biographies: Chen Jun(1981—), male, graduate; Huang Xiaoming(corresponding author), male, doctor, professor, huangxm@seu.edu.cn.
Foundation items: The National High Technology Research and Development Program of China(863 Program)(No.2006AA11Z110), the Research and Innovation Foundation for Graduate Students in Jiangsu Province(No.CX07B_-156Z), the Excellent Doctoral Dissertation Foundation of Southeast University.
Citation: Chen Jun, Huang Xiaoming. Virtual fracture test of asphalt mixture based on discrete element method[J]. Journal of Southeast University(English Edition), 2009, 25(4): 518-522.

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