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浇筑大块混凝土,由于施工条件,在浇注时是有间断的。为了把已凝固的混凝土与新浇面很好地结合起来,首先须进行特殊的机械处理:用刮刀及钢丝刷去掉碳酸盐薄膜,用凿子凿毛,用喷沙机洗净等等。这些工作非常困难,普通都只能用手工来作。这种情形下时间浪费很大。据作者所知,如像有些大工程(高尔基水电站、杜波萨尔建设工程等)曾专派十个人,费很长时间来从事这一工作。除了施工困难及浪费时间以外,这种接缝的虚
Pouring large pieces of concrete, due to the construction conditions, is intermittent during pouring. In order to combine the solidified concrete with the new finish, special mechanical treatment is first required: remove the carbonate film with a scraper and wire brush, chisel with a chisel, wash with a sandblasting machine, and the like. These jobs are very difficult and can only be done by hand. Time is wasted in this situation. According to the author’s knowledge, it took quite a long time to carry out this work, for example, if some major projects (such as the Gorky Hydroelectric Power Station and the Duobalsal Construction Project) had been dispatched for 10 people. In addition to construction difficulties and waste of time, the seams of the virtual