Steel slag concrete with steel slag replacing broken stone and preparation method thereof

The invention relates to the technical field of concrete preparation, specifically to steel slag concrete with steel slag replacing broken stone and a preparation method for the steel slag concrete. The steel slag concrete with the steel slag replacing the broken stone comprises the following raw materials: the steel slag, cement, fly ash, mineral powder, sand and a polycarboxylate superplasticizer. According to the invention, waste steel slag is used as aggregate and subjected to heat braising treatment, so free calcium oxide and free magnesium oxide in the steel slag are subjected to a hydration reaction, and expansion and shrinkage of the steel slag are reduced; meanwhile, the water content of the steel slag is saturated, so the problem of quick slump loss of the steel slag concrete with the steel slag replacing the broken stonel in the production process is solved. The concrete prepared by taking the cement, the fly ash and the mineral powder as cementing materials has the advantages of high strength and