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后浇带是在建筑施工中为防止现浇钢筋混凝土结构由于沉降、温度、收缩不均等因素可能产生的有害裂缝,按照设计或施工规范要求留设的临时施工缝,经一定时效后根据设计及规范要求再进行后浇封闭,形成整体结构。由于结构由后浇带连成整体,因此后浇带施工质量与结构质量休戚相关。后浇带处往往断面大,钢筋密集,模板支设难度大,杂物垃圾清理十分困难,砼振捣不密实,而有的管理人员认为后浇带混凝土浇筑面积小,没有引起足够重视,造成后浇带成为混凝土结构的薄弱环节,产生裂缝,造成渗水等质量隐患。
Post-pouring zone is to prevent harmful cracks in cast-in-place reinforced concrete structures due to factors such as settlement, temperature and shrinkage during construction. Temporary construction joints that are left as required by design or construction code, after certain aging, Specification requirements after the pouring closed, the formation of the overall structure. Due to the structure of the post-pouring belt into the whole, so after the pouring construction quality and structure of the quality of the rest. After pouring tend to section with large sections, intensive steel, the template is difficult to set up debris, garbage debris cleaning is very difficult, concrete vibration is not dense, and some managers believe that after pouring concrete pouring area is small, did not cause enough attention, resulting After pouring the concrete structure to become the weak link, resulting in cracks, resulting in water seepage and other quality problems.