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1923年,我国上海出现了25幢混凝土小型空心砌块住宅,总面积达16000m~2,迄今仍旧完好,70年代以来,我国的砌块工业初具规模,累计砌块建筑超过6000万m~2,生产砌块的厂家达6000多家。 90年代,国家建材局已将混凝土空心砌块正式列入“跨世纪的主导新型墙体材料及外墙主导产品”。此外,混凝土砌块生产的建厂投资小,原材料来源广泛,工业化程度高,生产成本低,使用功能可满
In 1923, there were 25 small concrete hollow block residential buildings in Shanghai, China, with a total area of 16,000m2. It is still intact. Since the 1970s, China’s block industry has begun to take shape. The cumulative block building has exceeded 60 million m2. There are more than 6,000 manufacturers producing blocks. In the 1990s, the National Building Materials Bureau has officially listed concrete hollow blocks as “the leading new-type wall materials and exterior wall leading products across the century.” In addition, the investment in the construction of concrete blocks is small, the source of raw materials is extensive, the degree of industrialization is high, the production cost is low, and the use function can be full.