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(一)问题的提出自六十年代初,上海等地研制成功粉煤灰硅酸盐密实砌块以来,全国各地相继建成了20多条生产线,年总产量达50多万米~3。然后,至今仍沿用钢模浇注,振动台成型和带模蒸养工艺。随着工业化不断向前发展,这种工艺逐渐地暴露出本身难以克服的缺点:其一耗钢据估计大,一套钢模使用5～6年后就需更换。据了解,成都一家年产4万米~3的硅酸盐砌块厂18年内更换钢模耗费钢材近600吨,仅此一项耗资
(I) The problem has been raised Since the early 1960s when Shanghai and other places successfully developed the fly ash silicate dense blocks, more than 20 production lines have been built across the country, and the total annual output reached more than 500,000 meters. Then, steel mold casting, vibratory table forming and belt mold steaming are still used. As industrialization continues to advance, this process gradually exposes its own insurmountable disadvantages: First, the consumption of steel is estimated to be large. A set of steel molds needs to be replaced after 5 to 6 years of use. It is understood that in Chengdu, an annual output of 40,000 m 3 of the silicate block plant to replace the steel mold in 18 years cost nearly 600 tons of steel, only this one cost