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Size effect on strength and fracture energy for numerical concrete with realistic aggregate shapes

Man, Hau-Kit ; van Mier, Jan

In: International Journal of Fracture, 2008, vol. 154, no. 1-2, p. 61-72

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    Title
    • Size effect on strength and fracture energy for numerical concrete with realistic aggregate shapes
    Author
    • Man, Hau-Kit. Department of Civil, Environmental and Geomatic Engineering (D-BAUG), Institute for Building Materials, ETH Zurich, 8093, Zurich, Switzerland
    • van Mier, Jan. Department of Civil, Environmental and Geomatic Engineering (D-BAUG), Institute for Building Materials, ETH Zurich, 8093, Zurich, Switzerland
    Document Type
    • Postprint
    Language
    • English
    Published in
    • International Journal of Fracture, 2008, vol. 154, no. 1-2, p. 61-72. Springer Netherlands
    Other Version
    OAI-PMH Identifier
    • oai:doc.rero.ch:317224
    Summary
    Fracture of concrete at the scale of the aggregate structure (or smaller) is a complicated process. Simple simulation models may be of help in understanding fracture in more detail, provided that the material structure is incorporated in as much detail as possible. A combined approach using computed tomography and image processing allows us to model concrete close to reality. The shape of the aggregates is included in a 3D beam lattice model for fracture. Fracture of concrete beams is simulated under 3-point bending with different sizes, aggregate densities and aggregates shapes, focusing on the size effect on structural strength and fracture energy