Interior uniformity recognition method based on relative density of all components of bituminous mixture
A technology of asphalt mixture and relative density, applied in the direction of material analysis using radiation, etc., can solve problems such as error, damage to the integrity of coarse aggregate, and inaccurate judgment of damage location
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[0038] The internal homogeneity identification method based on the relative density of each component of asphalt mixture includes the following steps:
[0039]Step 1: Carry out tomographic scanning along the axial direction of the asphalt mixture specimen to form sections with equal effective areas of several layers, such as figure 1 As shown, each section is divided into several regular small areas, and a digital image collection of the internal structure of the asphalt mixture specimen is established;
[0040] Step 2, write image segmentation and threshold selection;
[0041] Form n concentric circles in each section of the specimen image, and divide each concentric circle in the section, so that each concentric circle can obtain 4 fan-shaped areas with equal areas, and each layer section can obtain 4n fan-shaped areas ;
[0042] Then binarize each fan-shaped area, and use the Otsu method to select the threshold value; at the same time, calculate the components in the imag...
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