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目前,用于自来水管道的接口主要有以下几种:石棉水泥接口、自应力水泥接口、三合一石膏水泥接口,银粉水泥接口,沥青水泥砂浆接口和青铅接口。上述水泥型接口的养护期都较长。如比较常用的三合一石膏水泥接口需要72小时养护期,银粉水泥接口的养护期则达5～20天。况且这些水泥型接口的抗震性能都较差。青铅接口虽然不需要养护期抗震性能也较好,但由于造价昂贵,消耗大量的有色金属,且存在铅中毒,易烫伤,操作繁锁等问题。所以除在特殊情况下使用外,一般很少采用。另外,对铸铁管和水泥管之间的接口,青铅也是不适宜的。这样就迫切需要一种养护期短、操作简便、能
At present, there are mainly the following interfaces for tap water pipelines: asbestos cement interface, self-stressing cement interface, triple gypsum cement interface, silver powder cement interface, asphalt cement mortar interface and blue lead interface. The above cement-type interface has a long maintenance period. For example, the commonly used three-in-one gypsum cement interface requires a 72-hour maintenance period, and the silver-cement interface maintains a period of 5 to 20 days. Moreover, these cement-type interfaces have poor seismic performance. Although the Qing-Pb interface does not require seismic performance during the curing period, it is expensive, consumes a large amount of non-ferrous metals, and has lead poisoning, easy-burning, and cumbersome operations. Therefore, it is rarely used unless it is used under special circumstances. In addition, the lead is not suitable for the interface between the cast iron pipe and the cement pipe. This urgently requires a short curing period, easy operation, and