Early-age creep of 3D printable mortar: Experiments and analytical modelling

In this study, an experimental setup to characterize the early-age creep of 3D printable mortar was proposed. The testing protocol comprises quasi-static compressive loading-unloading cycles, with 180-s holding periods in between. An analytical model based on a double power law used predict compliance hardening time and loading duration as inputs. Subsequently, validated by comparison uniaxial compression tests which is increased incrementally, i.e., steps, showing good quantitative agreement. Minor differences between two results were noted, most notably at beginning test. This because determination for fresh stage depends load level. end, volumetric strain tested samples from test explain why affects deformation.