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
Ajouter à la liste personnelle- 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