Concrete modeling using micromechanical multiphase models and multiscale analysis

abstract: Concrete in its macrostructure is a multiphase cementitious composite material, however, by reducing scale, it possible to identify the phases that compose it, among are those embedded microscale: hydrated silicates, mesoscale: cement paste, transition zones and aggregates macro phase: itself. Modeling this type of material with two-phase micromechanical models common literature, but there already proven limitations can provide high modeling errors not recommended for study. Faced problem, an alternative would be use multiple-phase models, combined multiscale perspective attempt minimize error material. The present paper concrete two different constructions: without interfacial zone inclusion zone, verifying when neglecting important phase. entire homogenization process performed using decoupled technique, obtaining results rule out methodologies do evaluate conventional concrete. obtained reduced relative practically zero (compared experimental tests), demonstrating micromechanics tool provided considers as many robust take nature into account.