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

James Yang, W Ren, M Mostafavi, SA Mcdonald, TJ Marrow

Research output: Contribution to conferencePaper

21 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
Number of pages7
Publication statusPublished - 2013
Externally publishedYes
EventVIII International Conference on Fracture Mechanics of Concrete and Concrete Structures - Toledo, Spain
Duration: 10 Mar 201314 Mar 2013

Conference

ConferenceVIII International Conference on Fracture Mechanics of Concrete and Concrete Structures
CountrySpain
CityToledo
Period10/03/1314/03/13

Keywords

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

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  • Cite this

    Yang, J., Ren, W., Mostafavi, M., Mcdonald, SA., & Marrow, TJ. (2013). Characterisation of 3D fracture evolution in concrete using in-situ X-ray computed tomography testing and digital volume correlation. Paper presented at VIII International Conference on Fracture Mechanics of Concrete and Concrete Structures, Toledo, Spain.