Effect of particle density of tensile fracture properties of model concrete types

G. Lilliu, A.Meda*, C.Shi (Delft University of Technology, Delft, The Netherlands) *on leave from University of Brescia, Italy J.G.M. van Mier (ETH Hönggerberg, Zürich, Switzerland)

Numerical analysis of fracture in concrete subjected to tension by means of a 3D lattice type fracture model has revealed a significant effect of the particle density on the tensile strength and the post-peak behaviour. It was found that with increasing particle density the peak-load decreases whereas the ductility increases. Experiments conducted on synthetic concrete specimens confirm the outcome from numerical simulations.

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