Fracture of Foamed Cementitious Materials: A Combined Experimental and Numerical Study

  • D. Meyer
  • H. -K. Man
  • Jan G. M. van Mier
Part of the IUTAM Bookseries book series (IUTAMBOOK, volume 12)

Abstract

Foamed cements have the advantage of low density and good thermal isolation properties. In an effort to improve their low mechanical properties, a detailed study of the failure mechanism of foamed cement is undertaken. By means of in-situ micro compression tests inside an X-ray scanner, deformation and fracture of small specimen can be observed in detail.

Using a simple beam lattice model, the material is modelled and fracture is simulated, taking into account as much as possible detail of the material structure. Direct 3D comparison with the outcome of the experiments is possible which is further assisted by using directly the material structures measured on the small samples that are subsequently tested in the X-ray scanner. Some preliminary test results and simulations are presented in this paper.

Keywords

Porosity Dust Hydration Foam Brittle 

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References

  1. Lilliu G, van Mier JGM (2003) 3D lattice type fracture model for concrete. Engineering Fracture Mechanics 70:927–941CrossRefGoogle Scholar
  2. Margoldova J, van Mier JGM (1994) Simulation of compressive fracture in concrete. In: K.H. Schwalbe and C. Berger (eds) Proceedigs of the 10th European Conference on Fracture ECF 10, 1399–1409Google Scholar
  3. Meyer D, van Mier JGM (2006) The influence of the foam behaviour on the properties of foamed cement paste. In Vogel et al. (eds) 6th International Ph.D. Symposium in Civil Engineering, ETH Zurich, Switzerland; Abstract p 96, Paper on CDGoogle Scholar
  4. Meyer D, van Mier JGM (2007) Influence of different PVA fibres to the crack behaviour of foamed cement paste. In Carpinteri et al. (eds) 6th International Conference on Fracture Mechanics of Concrete and Concrete Structures, Catania, Italy, Taylor & Francis, London, pp 1359–1365Google Scholar
  5. RILEM TC 148:SCC (2000) Test methods for measurement of the strain-softening behaviour of concrete under uniaxial compression. Materials and Structures 33:347–351CrossRefGoogle Scholar
  6. Schlangen E, van Mier JGM (1992) Experimental and numerical analysis of micromechanism of fracture of cement based composites. Cement Concrete Composites 14:105–118CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V 2009

Authors and Affiliations

  • D. Meyer
    • 1
  • H. -K. Man
    • 1
  • Jan G. M. van Mier
    • 1
  1. 1.Department of Civil, Environmental and Geomatic Engineering, Institute for Building MaterialsETH ZurichZürichSwitzerland

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