Three-dimensional modeling and simulation of asphalt concrete mixtures based on X-ray CT microstructure images

【摘要】 X-ray CT(computed tomography) was used to scan asphalt mixture specimen to obtain high resolution continuous cross-section images and the meso-structure.According to the theory of three-dimensional(3D) reconstruction,the 3D reconstruction algorithm was investigated in this paper.The key to the reconstruction technique is the acquisition of the voxel positions and the relationship between the pixel element and node.Three-dimensional numerical model of asphalt mixture specimen was created by a self-developed program.A splitting test was conducted to predict the stress distributions of the asphalt mixture and verify the rationality of the 3D model.更多还原

【Abstract】 X-ray CT(computed tomography) was used to scan asphalt mixture specimen to obtain high resolution continuous cross-section images and the meso-structure.According to the theory of three-dimensional(3D) reconstruction,the 3D reconstruction algorithm was investigated in this paper.The key to the reconstruction technique is the acquisition of the voxel positions and the relationship between the pixel element and node.Three-dimensional numerical model of asphalt mixture specimen was created by a self-developed program.A splitting test was conducted to predict the stress distributions of the asphalt mixture and verify the rationality of the 3D model.更多还原