A feasibility study for a Concrete Core Tomographer

by A. M. Abdel-Ghaffar, Univ of Southern California, Los Angeles, United States,
R. M. Leahy, Univ of Southern California, Los Angeles, United States,
S. F. Masri, Univ of Southern California, Los Angeles, United States,
C. E. Synolakis, Univ of Southern California, Los Angeles, United States,



Document Type: Proceeding Paper

Part of: Nondestructive Testing of Concrete Elements and Structures

Abstract:

This is a study of the feasibility of applying computer tomography in the study of concrete cores. A laboratory protocol is presented for testing concrete cores using a medical - grade CT scanner. The protocol includes extensive software implementation for transferring data from CT computers to workstations, for removing various imaging artifacts from the concrete images and for performing automated image processing of concrete cores. Preliminary results are presented for estimating the system resolution and detectability. It is demonstrated that computerized axial tomography can be used effectively in evaluating the interior structure of concrete/aggregate mixes and for estimating various mass fractions in the mix. Also, applying edge - detection in tomograms may prove to be very useful tool for calibrating and validating finite - element codes used in mix design .

Subject Headings: Feasibility studies | Computer vision and image processing | Concrete | Radiography | Computing in civil engineering | Finite element method | Nondestructive tests

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