The effect of amount and several different types of mineral admixtures on the yield stress and plastic viscosity of self-consolidating concretes

The aim of this study was to evaluate the effect of self-consolidating concrete mixture components on yield stress (static and dynamic yield stress), and plastic viscosity. Accordingly, mixtures with different water-cement ratio and the amount of limestone powder were made. In addition, cement has been replaced with different percentages of silica fume, slag and metakaolin. The results show that increasing of water to cement ration cause decreasing of yield stress and plastic viscosity. On the other hand, increasing in limestone content leads to yield stress reduction. Over time, this yield stress increased while the plastic viscosity of mixtures showed no significant change. By replacing the silica fume, yield stress increased but plastic viscosity unchanged while metakaolin cause increasing in both parameters. The aim of this study was to evaluate the effect of self-consolidating concrete mixture components on yield stress (static and dynamic yield stress), and plastic viscosity. Accordingly, mixtures with different water-cement ratio and the amount of limestone powder were made. In addition, cement has been replaced with different percentages of silica fume, slag and metakaolin. The results show that increasing of water to cement ration cause decreasing of yield stress and plastic viscosity. On the other hand, increasing in limestone content leads to yield stress reduction. Over time, this yield stress increased while the plastic viscosity of mixtures showed no significant change. By replacing the silica fume, yield stress increased but plastic viscosity unchanged while metakaolin cause increasing in both parameters.