一、常州开发应用商品混凝土的基本概况常州是一个中等工业城市,东西长23公里,南北最宽处仅6公里左右,1978年以来,常州市作为全国建筑工业化试点城市之一,基本建设发展较快,全市年施工任务约50～80万m~2左右,现浇混凝土总用量约10～15万m~3,仅建工系统 I. Basic Profile of Changzhou’s Development and Application of Commercial Concrete Changzhou is a medium-sized industrial city with a length of 23 kilometers from east to west and only about 6 kilometers from the widest point in the north and south. Since 1978, Changzhou has been one of the pilot cities for industrialization of building construction in China, and its basic construction development has been relatively low. Fast, the city’s annual construction task is about 50-800,000 m2, and the total amount of cast-in-place concrete is about 100,000 to 150,000 m3, only the construction system