Experimental Study on Performance of Coal Gangue Foam Concrete
In order to explore the mechanical properties and working properties of coal gangue foamed concrete,the paper mainly carried out research on the mechanical properties and slump differences of coal gangue concrete with different concentrations of foaming agent and different dosage.The results show that the foamed concrete has significantly stronger fluidity when the water-cement ratio is 0.2,and the average com-pressive strength of the foamed concrete prepared under this condition is about 4.12 MPa and slump is 13.7 cm.The slump of foamed concrete slurry prepared by adding different amounts of coal gangue is different.The higher the amount of coal gangue,the lower the slump level,indi-cating that the addition of coal gangue can effectively strengthen the plasticity of concrete slurry.The compressive strength of concrete speci-mens increases first and then decreases with the increase of coal gangue content,and the compressive strength of concrete specimens reaches the highest level when the coal gangue content is 60%.
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