Aggregate Geometry Generation Method Using a Structured Light 3D Scanner, Spherical Harmonics–Based Geometry Reconstruction, and Placing Algorithms for Mesoscale Modeling of Concrete

Mesoscale numerical modeling is an effective method of representing concrete as a three-phase material. Accurate aggregate geometry representation important aspect in mesoscale to predict mechanical properties well the damage initiation and fracture propagation. In this paper, novel approach three-dimensional (3D) scanning aggregates using structured light 3D scanner presented, parametric reconstruction geometries spherical harmonics carried out. This faster, safer, economical, convenient obtaining compared with other methods. A comprehensive database developed, innovative aggregate-placing algorithm for these presented develop mesostructure. addition proposed generation method, parametric-based distribution polyhedral shapes including flaky elongated particles. Finally, transferring methods finite-element software mesh are discussed challenges possible overcome issues.