Design of iron tailings-steel slag asphalt mixture mix and road performance
Iron tailings-steel slag asphalt mixture was prepared by replacing natural coarse aggregate with iron tailings and steel slag coarse aggregate,and the properties of the mixture were experimentally studied on its high temperature stability,low temperature crack resistance,water stability and long-term volume deformation.The results show that the mixing of steel slag and iron tailings as skeleton aggregate can improve the high and low temperature performance and water stability of the mixture compared with the two as skeleton aggregates respectively,and the synergistic effect of coarse skeleton aggregate iron tailings and medium and coarse skeleton aggregate steel slag can effectively reduce the expansion and deformation of asphalt mixture caused by steel slag instability,thereby improving the volume stability of the mixture.