Estimation of the Structure of Air Entrained Concrete Using a Flatbed Scanner

This article demonstrates the potentials of estimating air voids in concrete by automatic image analysis using a high-resolution flatbed scanner while simultaneously measuring the quantity of cement paste. The article describes sample preparation techniques and components of the image analysis system. In investigating the structure of the entrained air voids system, the researchers found that the results obtained by using a high-resolution flatbed scanner were similar to those obtained with the use of such conventional techniques as a stereomicroscope. The article also presents the possibility of automatically measuring the paste content in hardened concrete by analysis of plane sections, taking into account information available in RGB (red-green-blue) histograms. A new procedure --- the estimation of the air void parameters with a high quality flatbed scanner --- is proposed by the researchers for the identification of the distance from the cement paste to periphery of the nearest air void. This enables rapid evaluation of the quality of the air entrainment treatment. The procedure also allows some characterization of the aggregate component. Using the flatbed scanner and a special preparation technique makes it possible to automatically measure the paste content on the surface of concrete specimens. Without using such procedures, similar measurement is impossible when working with a microscope and must then be done manually.

  • Availability:
  • Authors:
    • Zalocha, D
    • Kasperkiewicz, J
  • Publication Date: 2005-10


  • English

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  • Accession Number: 01010992
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 27 2005 2:14PM