Effect of Potassium Sulfate on the Portland Cement Pastes Setting Behavior

Abstract

The article deals with the effect of potassium sulfates on the setting behavior of cement pastes. It has been established that the main elements (Ca, Si, Al) are distributed in the composition of clinker minerals, while K and S atoms are concentrated locally in the pores with the formation of arcanite. It is shown that the interaction of K2SO4 and CaSO42H2O followed by the formation of syngenite K2Ca(SO4)2H2O causes destructive phenomena in cement pastes.