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五十年代,我国就有集中搅拌站搅拌的混凝土,例如:港湾码头、水电大坝、大型厂矿及首都的十大工程等。然而做为商品形式出现的商品混凝土(即国外的预拌混凝土),却是近几年刚刚萌芽的新工艺、新技术。七十年代,我国引进了一大批搅拌设备,包括大型搅拌机、搅拌车、输送泵车等,准备普遍发展商品混凝土。但又因某些原因当时未能实现。但是,常州市却以国产设备,因陋就简,在1978年建成了商品混凝土供应站,推行了商品混凝土,为建筑业专业化大生产树立了榜样。与此同时,上海二建以公司内部为主试销了商品混凝土。1979年上海建工局又发展了三个商品混凝土供应站。同年宝钢也成立搅拌站,向建厂各局推行厂内基建用商品混凝土。北京于1980年也
In the 1950s, there were concrete mixers in the mixing station in China, for example, the ten major projects such as harbor terminals, hydropower dams, large-scale factories and mines, and the capital. However, commercial concrete (ie foreign ready-mixed concrete) that appears as a commodity form is a new technology and new technology that has just sprouted in recent years. In the 1970s, China introduced a large number of mixing equipment, including large-scale mixers, mixers, and pump trucks, in preparation for the general development of commercial concrete. But for some reason it failed to materialize at that time. However, in Changzhou City, domestically produced equipment was used. Since it was simple, the commercial concrete supply station was built in 1978, and commercial concrete was introduced, setting an example for the professional production of the construction industry. At the same time, Shanghai Erjian built a trial of commercial concrete for the company’s internal use. In 1979, Shanghai Construction and Industry Bureau also developed three commercial concrete supply stations. In the same year, Baosteel also set up a mixing plant to promote the construction of commodity concrete for the infrastructure of the factory. Beijing also in 1980