3D morphological modeling of concrete using multiscale Poisson polyhedra

Julie Escoda (1) , Dominique Jeulin (1) , François Willot (1) , Charles Toulemonde (2)

1 CMM - Centre de Morphologie Mathématique
2 EDF R&D MMC - Matériaux et Mécanique des Composants

This paper aims at developing a random morphological model for concrete mi-crostructures. A 3D image of concrete is obtained by micro-tomography and is used in conjunction with the concrete formulation to build and validate the model through morphological measurements. The morphological model is made up of two phases, cor-responding to the matrix, or cement paste and to the aggregates. The set of aggregates in the sample is modeled as a combination of Poisson polyhedra of different scales. An algorithm is introduced to generate polyhedra packings in the continuum space. The latter is validated with morphological measurements.

Mots clés: multiscale materials; granulometry; concrete; Random microstructure models

Domaines: Mécanique des matériaux [physics.class-ph]

Julie Escoda, Dominique Jeulin, François Willot, Charles Toulemonde. 3D morphological modeling of concrete using multiscale Poisson polyhedra. Journal of Microscopy, 2015, 258 (1), pp.31-48. ⟨10.1111/jmi.12213⟩. ⟨hal-01096766⟩