New method to quantitatively evaluate the homogeneity of asphalt mixtures
WU Wen-liang, ZHANG Xiao-ning, WANG Duan-yi, Li Zhi
Road Engineering Institute,South China University of Technology,Guangzhou 510641,China
Abstract:
To evaluate the homogeneity of asphalt mixtures,the images of sections obtained by cutting the asphalt mixtures specimen horizontally or vertically were analyzed with digital image processing techniques,and the particle area ratio was achieved by applying sector scan for horizontal specimen and vertical scan for vertical one.The research result indicates that the influence of random distribution of aggregates in cutting the specimen can be eliminated by using colored aggregates to distinguish coarse and fine aggregates and using color threshold to segment the images.Choosing three typical gradations,proving particle area ratio obeying normal distribution and using the variability of particle area ratio as an index,it is feasible to quantitatively evaluate the homogeneity of asphalt mixtures.
Key words: asphalt mixture digital image processing homogeneity colored aggregate particle area ratio
DOI：10.11916/j.issn.1005-9113.2009.04.018
Clc Number:U414.1
Fund:
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New method to quantitatively evaluate the homogeneity of asphalt mixtures
本站小编 哈尔滨工业大学/2019-10-23
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