Characterisation of 3d fracture evolution in concrete using in-situ X-ray computed tomography testing and digital volume correlation

Zhenjun Yang, Wenyuan Ren, Mahmoud Mostafavi, Samuel A. Mcdonald, T. James Marrow

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

19 Citations (Scopus)

Abstract

X-ray Computed Tomography (XCT) is a powerful technology that can accurately image the internal structures of composite and heterogeneous materials in three-dimensions (3D). In this study, in-situ micro XCT tests of concrete specimens under progressive compressive loading are carried out. The aim of the observations is to gain a better understanding of 3D fracture and failure mechanisms at the meso-scale. To characterise the fracture evolution as the deformation increases, two methods are used. The first segments the reconstructed absorption contrast XCT images using AVIZO software into different phases, namely, aggregates, mortar, cracks and voids. The second uses the digital volume correlation (DVC) technique to map the relative deformations between consecutive XCT images with high precision; bulk mechanical properties can be measured and cracks visualised via their opening displacement. The 3D crack profiles obtained by these two methods are compared, and the contributions that they can make to image-based modelling and its validation are noted.

Original languageEnglish
Title of host publicationProceedings of the 8th International Conference on Fracture Mechanics of Concrete and Concrete Structures, FraMCoS 2013
Pages236-242
Number of pages7
Publication statusPublished - 2013
Event8th International Conference on Fracture Mechanics of Concrete and Concrete Structures, FraMCoS 2013 - Toledo, Spain
Duration: 11 Mar 201314 Mar 2013

Conference

Conference8th International Conference on Fracture Mechanics of Concrete and Concrete Structures, FraMCoS 2013
CountrySpain
CityToledo
Period11/03/1314/03/13

Keywords

  • Concrete in compression
  • Digital volume correlation
  • Fracture process zone
  • In-situ X-ray computed tomography
  • Segmentation
  • Three-dimensional fracture visualisation

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  • Cite this

    Yang, Z., Ren, W., Mostafavi, M., Mcdonald, S. A., & Marrow, T. J. (2013). Characterisation of 3d fracture evolution in concrete using in-situ X-ray computed tomography testing and digital volume correlation. In Proceedings of the 8th International Conference on Fracture Mechanics of Concrete and Concrete Structures, FraMCoS 2013 (pp. 236-242)