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متالوژی::
میکروسیلیس
(3) Silica fume or micro-silica or fluffy silica or simply silica dust: It is the waste material generated as smoke or fume from ferrosilicon, semiconductor and other industries.
based on micro-silica, metakaolin and rice husk ash has high early strength, reduced permeability, greater durability, less efflorescence, resistance to degradation caused by alkali- silica reaction (ASM), but it also has the disadvantage of high heat of hydration with reduced workability.
Sometimes, a mixture of this fly ash and micro-silica is used in order to combine the advantages of both.
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