Effects of fly ash and blast furnace slag as the pozzolan material in concrete production

In this study, the effects of ash and slag on the physical and mechanical properties of the concrete were investigated experimentally, and the change in the cost of concrete was examined. For this purpose, concrete samples containing a series of standard concrete, 3 series of ash and 2 series of slag were poured. As a result of the study, ash and slag generally increased the beginning and ending of setting times. It was observed that both pozzolan materials increased the workability of fresh concrete and decreased the hydratation heat.In concrete compressive strength, it was observed that the ash and slag replacement decreased the strength at early ages and caused a higher concrete strength at older ages.