吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (4): 968-973.

• paper • Previous Articles     Next Articles

Numerical simulation of splitting test of asphalt mixture based on DIP-FEM

WANG Duan-yi|WU Wen-liang|ZHANG Xiao-ning|YU Jiang-miao, LI Zhi   

  1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China
  • Received:2009-08-12 Online:2011-07-01 Published:2011-07-01

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Abstract:

A finite element analysis model was built for the asphalt mixture including the aggregate, the air void, and the asphalt mastic using the specimen images acquired by industrial CT and the digital image processing(DIP) as well as the finite element modeling(FEM) technique. The splitting tests(indirect tensile tests) of the asphalt mixture were simulated in consideration of the air void distribution, different loading directions, and different aggregate asphalt modulus ratios. The results indicate that the stress concentration factor can be used to describe the distribution of stress inside the asphalt mixture, and the mixture gradation, the modulus ratio, the air void and the loading position affect the simulation results significantly. By the DIP-FEM method the microstructure and the macromechanics of the asphalt mixture can be interrelated well.

Key words: road engineering, asphalt mixture, splitting test, digital image processing(DIP), finite element modeling(FEM), DIP-FEM

CLC Number: 

  • U414.1
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