Investigation of the Crack Behavior of CRC Using 4D Computed Tomography, Photogrammetry, and Fiber Optic Sensing

Josiane Giese; Max Herbers; Frank Liebold; Franz Wagner; Szymon Grzesiak; Christoph de Sousa; Matthias Pahn; Hans-Gerd Maas; Steffen Marx; Manfred Curbach; Birgit Beckmann

doi:10.3390/buildings13102595

Buildings (Oct 2023)

Investigation of the Crack Behavior of CRC Using 4D Computed Tomography, Photogrammetry, and Fiber Optic Sensing

Josiane Giese,
Max Herbers,
Frank Liebold,
Franz Wagner,
Szymon Grzesiak,
Christoph de Sousa,
Matthias Pahn,
Hans-Gerd Maas,
Steffen Marx,
Manfred Curbach,
Birgit Beckmann

Affiliations

Josiane Giese: Institute of Concrete Structures, TUD Dresden University of Technology, 01062 Dresden, Germany
Max Herbers: Institute of Concrete Structures, TUD Dresden University of Technology, 01062 Dresden, Germany
Frank Liebold: Institute of Photogrammetry and Remote Sensing, TUD Dresden University of Technology, 01062 Dresden, Germany
Franz Wagner: Institute of Photogrammetry and Remote Sensing, TUD Dresden University of Technology, 01062 Dresden, Germany
Szymon Grzesiak: Department of Civil Engineering, RPTU Kaiserslautern-Landau, 67663 Kaiserslautern, Germany
Christoph de Sousa: Department of Civil Engineering, RPTU Kaiserslautern-Landau, 67663 Kaiserslautern, Germany
Matthias Pahn: Department of Civil Engineering, RPTU Kaiserslautern-Landau, 67663 Kaiserslautern, Germany
Hans-Gerd Maas: Institute of Photogrammetry and Remote Sensing, TUD Dresden University of Technology, 01062 Dresden, Germany
Steffen Marx: Institute of Concrete Structures, TUD Dresden University of Technology, 01062 Dresden, Germany
Manfred Curbach: Institute of Concrete Structures, TUD Dresden University of Technology, 01062 Dresden, Germany
Birgit Beckmann: Institute of Concrete Structures, TUD Dresden University of Technology, 01062 Dresden, Germany

DOI: https://doi.org/10.3390/buildings13102595
Journal volume & issue: Vol. 13, no. 10
p. 2595

Abstract

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The highly irregular crack pattern of reinforced concrete has been studied primarily at the surface. The ability to extend image correlation into the interior of structures by using X-ray computed tomography (CT) opens up new possibilities for analyzing the internal mechanics of concrete. In order to enable a complete material characterization, it is necessary to study the crack geometry at the micro level in 3D images over time, i.e., 4D data. This paper presents the results of in situ CT tests that were carried out on carbon-reinforced concrete (CRC) beams subjected to bending load. The main objective of the tests was the experimental analysis of the evolution of individual cracks at different stages of their formation by applying digital volume correlation (DVC) to the 4D image data from the computed tomography. The results obtained from the CT were compared with other measurement techniques, such as distributed fiber optic sensing, clip gauges, and digital image correlation (DIC).

Published in Buildings

ISSN: 2075-5309 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Building construction
Website: https://www.mdpi.com/journal/buildings

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