论文部分内容阅读
目前北京地区，生产砌块的厂家已发展到８０多家，年产量达到５００万m３，生产与应用的品种主要有轻集料混凝土小型空心砌块、普通混凝土小型空心砌块和加气混凝土砌块三大类别，形成了一定的规模，已成为建筑工程中应用较广泛的产品。特别是实行准用证管理以来，砌块产品在生
Currently in Beijing, the production of block manufacturers has grown to more than 80, the annual output reached 5 million m3, the production and application of varieties are mainly light aggregate concrete small hollow block, ordinary concrete small hollow block and aerated concrete Block three categories, formed a certain scale, has become a more widely used in construction engineering products. In particular, since the implementation of permit management, block products in health