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Estimation of Grain Size in Asphalt Samples using Digital Image Analysis

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Author

Summary, in English

Asphalt is made of a mixture of stones of different sizes and a binder called bitumen, the size distribution of the stones is determined by the recipe of the asphalt. One quality check of asphalt is to see if the real size distribution of asphalt samples is consistent with the recipe. This is usually done by first extracting the binder using methylenchloride and the sieving the stones and see how much that pass every sieve size. Methylenchloride is highly toxic and it is desirable to find the size distribution in some other way. In this paper we find the size distribution by slicing up the asphalt sample and using image analysis techniques to analyze the cross-sections. First the stones are segmented from the background, bitumen, and then rectangles are fit to the detected stones. We then estimate the sizes of the stones by using the width of the rectangle. The result is compared with both the recipe for the asphalt and with the result from the standard analysis method, and our method shows good correlation with those.

Publishing year

2014

Language

English

Pages

921714-921714

Publication/Series

Applications of Digital Image Processing XXXVII

Volume

9217

Document type

Conference paper

Publisher

SPIE

Topic

  • Mathematics

Keywords

  • Machine vision
  • asphalt samples
  • size distribution
  • grain size

Conference name

Conference on Applications of Digital Image Processing XXXVII

Conference date

2014-08-18 - 2014-08-21

Status

Published

ISBN/ISSN/Other

  • ISSN: 0277-786X
  • ISSN: 1996-756X