Experimental Study on the Mix Proportion Optimization of Full Tailings Concrete

Abstract

Full iron tailings concrete can effectively use iron tailings as the raw materials of concrete. This paper used iron tailings powder, iron tailings sand and iron tailing gravel to replace fly ash, river sand, and ordinary gravel as concrete admixtures, fine and coarse aggregates, respectively. The orthogonal experimental method was used to optimize the mix proportion of C40 strength grade full iron tailings concrete. Research results showed that the optimal mix proportions of C40 strength grade full iron tailings concrete was water cement ratio 0.34, sand ratio 39%, and water reducing agent 0.4%.