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混凝土施工缝几乎可以说是每个混凝土工程都要遇到的问题。而施工缝的留设方式、施工缝的质量、位置直接影响整个建筑结构的质量与安全,因此必须严格控制施工缝的质量。现结合现行施工规范及平时设计和现场服务的一些经验,就施工缝的问题作些探讨。由于设计、施工技术和施工组织上的原因,不能连续将结构整体浇筑完成,并且间歇时间超过混凝土运输和浇筑允许的延续时间,先后浇筑的混凝土结合面就称为施工缝。由于施工缝而引发的施工质量问题主要有两大类:一是施工缝位置留设不当,二是施工时对施工缝的处理不妥。
Concrete construction joints can almost be said to be a problem encountered in every concrete project. The method of leaving construction joints, the quality and location of construction joints directly affect the quality and safety of the entire building structure, so the quality of construction joints must be strictly controlled. Based on some experience in the current construction specifications and the usual design and on-site service, we will discuss some issues concerning construction joints. Due to the design, construction technology and construction organization reasons, the entire structure cannot be continuously cast and the rest time exceeds the allowable duration of concrete transportation and pouring. The concrete joints that are placed one after another are called construction joints. The construction quality problems caused by construction joints mainly fall into two categories: one is the improper placement of construction joints, and the other is the improper handling of construction joints during construction.