High-strength carbonized steel slag cementing material and preparation method thereof

The invention relates to a high-strength carbonized steel slag cementing material and a preparation method, belongs to the technical field of building materials, and can improve the performance of carbonized steel slag blocks and the storage amount of CO2. The method comprises the following steps: S1, uniformly mixing a lifting agent with water to obtain a lifting agent solution; the improver is ammonium citrate or a mixture of ammonium citrate and at least one of H2SO4, citric acid and sodium citrate; s2, the lifting agent solution and steel slag powder are fully mixed, and a wet mixture is obtained; s3, pressing the wet mixture to obtain a blank body; s4, the blank is placed in a CO2-rich environment for carbonization treatment, and a carbonized steel slag cementing material is obtained; the compressive strength of the high-strength carbonized steel slag cementing material is 99-108 MPa, the CO2 absorption amount of each hectogram of steel slag powder is 16.2-17 g, and the porosity is ...