Study of Manufacture Process and Properties of Tailings and Slag Based Geopolymers
The tailings and slag based geopolymers was prepared by sodium silicate, sodium hydroxide alkali-activated tailings and slag. The compressive strength in 7 d under different raw material proportion were tested. The result indicated that tailings and slag based geopolymers has high compressive strength . As the tailings in slag is 80%, the compressive strength in 7d can reach 45.10 MPa . As the Na2SiO3 to NaOH ratio is 0.5, the compressive strength in 7d can reach 63.79 MPa. As the NaOH and sodium silicate concentration in the solution is 35%, the compressive strength in 7d can reach 38.35 MPa respectively; As the curing period is 14 d , the compressive strength can reach 71.25 MPa. As the steel scoria in solid is 20%, the compressive strength in 7d can reach 61.86 MPa respectively.
Jingtao Han, Zhengyi Jiang and Sihai Jiao
F. S. Niu et al., "Study of Manufacture Process and Properties of Tailings and Slag Based Geopolymers", Advanced Materials Research, Vols. 156-157, pp. 803-807, 2011