Study on manufacture process and properties of tailings and slag based mine filling cementitious materials

The tailings and slag based mine filling cementitious materials was prepared by sodium silicate and sodium hydroxide alkali-activated tailings and slag.Through the test that the cementing materials in the best ratio of raw materials:when slag and tailings admixture is 1.25,the content of NaOH was 50%,the amount of sodium hydroxide for 50%,water cement ratio of 0.22,under the condition of normal temperature curing 7 days,eventually making a compressive strength of 52.3MPa cementing materials.