To enhance the gelation activity of steel slag,a calcination process was employed to activate it.The activated steel slag was then utilized as the primary raw material,combined with sodium silicate as the activator,to...To enhance the gelation activity of steel slag,a calcination process was employed to activate it.The activated steel slag was then utilized as the primary raw material,combined with sodium silicate as the activator,to prepare a gel material.The effect of calcination temperature on the physicochemical properties of steel slag and the resulting samples was examined.The chemical composition and microstructure of the steel slag,along with the derived samples,were meticulously examined using advanced analytical techniques such as X-ray diffraction spectroscopy,Fourier transform infrared spectroscopy,and scanning electron microscope analysis.The results show that calcination can significantly enhance the gelation activity of steel slag.The steel slag exhibits its highest gelation activity at the temperature of 600℃.At this temperature,the compressive strength of the material reaches its highest value of 11.7 MPa,while the porosity is at its lowest level of 12.6%.The microstructure of the samples reveals large continuous regions on the surface of the gel material,with minimal surface cracks.展开更多
基金sponsored by the Natural Science Foundation of Hebei Province(E2022209101 and E2020209038)the Central Government Guides Local Funds for Scientific and Technological Development(236Z7603G).
文摘To enhance the gelation activity of steel slag,a calcination process was employed to activate it.The activated steel slag was then utilized as the primary raw material,combined with sodium silicate as the activator,to prepare a gel material.The effect of calcination temperature on the physicochemical properties of steel slag and the resulting samples was examined.The chemical composition and microstructure of the steel slag,along with the derived samples,were meticulously examined using advanced analytical techniques such as X-ray diffraction spectroscopy,Fourier transform infrared spectroscopy,and scanning electron microscope analysis.The results show that calcination can significantly enhance the gelation activity of steel slag.The steel slag exhibits its highest gelation activity at the temperature of 600℃.At this temperature,the compressive strength of the material reaches its highest value of 11.7 MPa,while the porosity is at its lowest level of 12.6%.The microstructure of the samples reveals large continuous regions on the surface of the gel material,with minimal surface cracks.
