Properties of Concrete Modified by Ultrafine Cement Admixture

This article describes possibility using hydrated cement as additions for batching new concrete. Time of hydration was 2, 4 and 6 hours. Quantity pre-hydrated admixture equal 5, 10, 15, 30% dry matter content in relation to control mixture. Influence addition on normal consistency, concrete unit weight compression resistance determined. Cement particles distributions specimens studied. The shown need increasing water quantity getting consistency which led decreasing weight. As a result adding an early strength increased with amount less than 10%. Received results were discussed according hydrations mechanism.