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利用粉煤灰做建筑用砖,具有大量吃灰与生产建材一举两得之利。但由于过去的蒸养粉煤灰砖比烧结红砖成本高,因而迫使许多厂下马或转产。当前国内外都在大力推广一种新型节能建筑材料——免烧砖。根据我们的调查,目前国内外的免烧砖都是粘土或以粘土为主要原料的免烧砖。为大量利用电厂的粉煤灰,减少或免用粘土以及节能等目的,湖北省电力工业局于1989年给省电力试验研究所下达了研制免烧砖的计划任务,
The use of fly ash for building bricks has the advantages of eating a large amount of ash and producing building materials. However, due to the fact that the cost of steamed fly ash bricks in the past was higher than that of sintered red bricks, many mills were forced to discontinue or switch production. At home and abroad are currently promoting a new type of energy-saving building materials - unburned bricks. According to our investigation, the unfired bricks at home and abroad are clay or unfired bricks with clay as the main raw material. In order to make heavy use of fly ash in power plants, reduce or eliminate the use of clay, and save energy, the Hubei Provincial Bureau of Power Industry issued a plan for the development of unburned bricks to the Provincial Power Research Institute in 1989.