Study on the Attenuation Law of Wear Resistance of Steel Slag Aggregate Based on Microstructure
In order to study the attenuation law of wear resistance and mechanization of steel slag aggregate,the ac-celerated polishing machine was used to polish two kinds of steel slag aggregates.Under different polishing time,the polishing values of two kinds of aggregates were measured by pendulum instrument to analyze the attenuation law of wear resistance;The surface micro-morphology was measure by laser confocal microscope to study the change rule of micro-morphology with polishing time;The grey correlation analysis method was used to analyze the correlation between the microscopic morphology evaluation index of steel slag aggregate and the polishing value under different polishing time.The results show that the polishing values of the two steel slag aggregates decrease gradually with the increase of polishing time;The wear resistance and skid resistance of steel slag aggregate depend on the way of ma-terial preparation and processing characteristics;The correlation between the polishing value of steel slag aggregate and the peak density and sharpness is above 0.75,which can be used as a reliable index to evaluate the wear resistance.The arithmetic mean height,maximum height,peak mean curvature and skewness can be used as auxiliary indexes.
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