distinct element modeling uniaxial compressive test applied to geopolymeric concrete

in this study, a distinct element model (dem) of geopolymeric concretes was developed using a particular flow code (pfc) to calculate the uniaxial compressive strength; the concrete has been modeled by an assembly of rigid particles bended together. then a standard compressive test was carried out to determine the micro-mechanical parameters (i.e. bond strength, contact elastic modulus and friction coefficient between the particles). the results obtained from the dem model showed that the compressive strength of concrete is highly sensitive to the tensile bond strength of fine particles comprising the concretes.