MESO-SCALE MODELING OF CONCRETE WITH REALISTICALLY SHAPED AGGREGATES AND ITS QUANTITATIVE EVALUATION

Abstract

This paper develops meso-scale concrete models with realistically shaped coarse aggregates in three-dimension. The discrete Voronoi diagram produces coarse aggregates, each of which is then arranged randomly without overlapping in accordance with the grading curve. The volume fraction, distribution, size, and shape of coarse aggregates obtained from the proposed model are compared quantitatively with those of actual concretes. Good agreements are found between the numerical and real concretes, but the result shows that the coarse aggregate shape obtained from the proposed model is somewhat more isotropic than real aggregates.