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In this research, a feasibility study is performed on geopolymerization of iron mine railings (IMT) so that they can be recycled and utilized as construction material.Granulated blast furnace slag (GBFS) is used to decrease the extremely high silicon to aluminum (Si/Al) ratio for the IMT, and improve early strength of the IMT-based geopolymer.Aqueous sodium silicate (SS) was used as the alkaline activator.This research investigated the joint effects of several parameters that could influence strength development of the geopolymer with curing time,such as mixture ratio of IMT and GBFS, SiO2/Na2O molar ratios of aqueous SS and its addition percentage as well as curing temperature, etc.Scanning electron microscopy (SEM) and the X-ray diffraction (XRD) were conducted to investigate the microstructure and phase composition of the IMT-based geopolymer specimens prepared at different conditions.The results show the compressive strength of specimen is increased with increasing the GBFS to IMT mass ratio.Addition of the NaOH solution to aqueous SS can lead to strength improvement, with the highest strength obtained at a SiO2/Na2O molar ratio of 1.5 and at a 10% SS percentage.The optimum curing temperature, i.e., the curing temperature at the maximum strength, is 50℃.As a result, the IMT-based geopolymers prepared with IMT/GBFS mixture ratios from 1:0 to 3:2 show compressive strength ranging from 12.3 to 82.3 MPa.