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刚性防水屋面是指由细石混凝土和钢筋网片构成的防水层,具有施工简便、造价较低、防水性能良好等特点。但因设计和施工疏忽而造成的屋面防水层开裂、起鼓和渗漏也屡见不鲜。现就刚性屋面容易出现的质量通病谈谈设计与施工质量控制的措施。一、基层要求1.结构层:刚性防水屋面的结构层宜为整体现浇钢筋混凝土。当屋面结构为装配式钢筋混凝土板时,应用强度等级为c20的细石混凝土认真灌缝,而且灌缝的混凝土宜掺微膨胀剂。当屋面板缝宽度大于40毫米或上窄下宽时,板缝内必须设置构造钢筋。板端头缝隙应进行密封处理,待混凝土初凝后养护7天,
Rigid waterproof roof refers to a waterproof layer composed of fine stone concrete and reinforced mesh. It has the characteristics of simple construction, low construction cost, and good waterproof performance. However, it is not uncommon for cracks, kicks, and leaks in roofing waterproofing caused by negligence in design and construction. Now we will talk about the design and construction quality control measures on the common quality problems of rigid roofs. First, the basic requirements 1. Structural layer: rigid waterproof roof structure layer should be the overall cast-in-place reinforced concrete. When the roof structure is a prefabricated reinforced concrete slab, fine stone concrete with a strength class of c20 should be carefully grouted, and the grouted concrete should be mixed with a micro-expansion agent. When the width of the roof panel seam is more than 40mm or the width is narrow, the structural reinforcement must be set in the panel seam. The gap at the end of the board should be sealed and the concrete should be cured for 7 days after initial setting.