Viscoelastoplastic classification of cementitious suspensions: transient and non-linear flow analysis in rotational and oscillatory shear flows

Abstract Rheological modeling of special concretes such as ultra-high performance (UHPCs), self-compacting (SCCs), or environmentally friendly with low clinker contents but containing many fine particles increases model complexity because high amounts colloidal and complex chemistry result in strongly non-Newtonian rheological behavior. Straight-forward viscoplastic models the well-known Bingham- Herschel-Bulkley approach do not fit flow behavior on a large scale at lead to boundary value problems numerical simulations. Increased viscoelastic properties due chemical admixtures are described by pure viscoplasticity analysis methods. To fill this gap, our research presents linear non-linear characterization methods for common cement pastes combines comprehensive viscoelastoplastic cementitious building materials. We illustrate discuss benefits boundaries each measurement technique dependence paste complexity. Three solid volume fractions from $$\phi$$ ϕ = 0.45 0.55 three different flowability ranges, adjusted through varying superplasticizer amounts, were investigated respect steady-state transient yield stress, viscosity, material properties. Our results reveal that increasing fraction polymer amount, describes more appropriately than The show new full quantitative qualitative classification materials thus improve understanding densely packed suspensions. findings serve prospective guideline both shear rates, find an appropriate description flow. Graphical abstract