Visualizing Air Voids and Synthetic Fibers from X-Ray Computed Tomographic Images of Concrete

Amanda C. Bordelon, Sungmin Hong, Yohann Bearzi, Clement Vachet, Guido Gerig

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    A challenge in quality control for synthetic fiber-reinforced concrete is determining the actual spatial distribution of fibers. This paper presents the first computer algorithm to identify synthetic macrofibers within hardened concrete that has been scanned in an industrial X-ray computed tomographic scanner. The algorithm can also be used to obtain the spatial distribution of other inclusions such as air voids or steel fibers as well. Visualization of synthetic fibers was the primary focus of this work. The heterogeneous nature of concrete results in a noisy image which makes identifying contrast edge segmentation difficult for to the image processing. In order to identify only fibers, the air voids touching the fibers must be identified separately because they are similar in grayscale as the synthetic fibers. These air voids are assumed to be spherical in shape, and once identified can be extracted from the remaining fiber-aggregate-cement system. In this study, it was determined that the algorithm works best for straight macrosynthetic fibers where the pixel resolution is similar or smaller than the diameter of the fibers and if the fibers remain straight lines in the 3D matrix.

    Original languageEnglish (US)
    Title of host publication2020 Intermountain Engineering, Technology and Computing, IETC 2020
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781728142913
    DOIs
    StatePublished - Oct 2 2020
    Event1st Intermountain Engineering, Technology and Computing, IETC 2020 - Orem, United States
    Duration: Oct 2 2020Oct 3 2020

    Publication series

    Name2020 Intermountain Engineering, Technology and Computing, IETC 2020

    Conference

    Conference1st Intermountain Engineering, Technology and Computing, IETC 2020
    Country/TerritoryUnited States
    CityOrem
    Period10/2/2010/3/20

    Keywords

    • X-ray computed tomography
    • air voids
    • fiber-reinforcement
    • image processing
    • visualization

    ASJC Scopus subject areas

    • Computer Science (miscellaneous)
    • Computer Networks and Communications
    • Control and Optimization
    • Computer Science Applications
    • Information Systems
    • Engineering (miscellaneous)

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