Analysis of the utilization of blast furnace slag as recycled aggregates in self-compacting concrete

Abstract

In this article, a study for investigating the effects of replacing the aggregate of selfcompacting concrete by blast furnace slag has been carried out. Different mixes have been made by substituting the fine and coarse aggregates. The fracture energy, the tensile strength and the compressive strength have been tested. The remaining properties of selfcompacting, or the absence of them, have been observed. This research can find goals such as decreasing the price of aggregates, reducing the industrial waste and attenuating the rate of consumption of natural resources. The results show that the self-compacting property is gradually lost as the slag content is increased, so – when the ratio of replacement is low – the concrete keeps the selfconsolidating properties. However, these losses affect to the mechanical properties.