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目前,许多砖混结构住宅楼的现浇阳台室内配重板与空心板相交处,常常在顶棚抹灰粉饰1.5～3个月后,出现裂缝(见图1)。经多次分析观察,裂缝产生的原因归结如下:①砖混结构住宅楼每层纵横墙顶部均采用硬架支模,所以在浇筑阳台及室内配重板混凝土时,相邻的空心板就成了配重板端头的模板。如果将此块空心板长侧面在浇筑混凝土前洒水浸入板内10mm,且在其表面撤一层素水泥浆,然后将与空心板接触的混
At present, many brick-concrete structures of residential buildings on the in-situ balcony of the indoor weight plate and the intersection of the hollow plate, often plastering the roof after 1.5 to 3 months, the emergence of cracks (see Figure 1). After many analysis and observation, the causes of the cracks are summarized as follows: 1 The top and bottom of the vertical and horizontal walls of the brick-concrete structure residential building adopts the hard frame mold, so when pouring the balcony and the indoor weight plate concrete, the adjacent hollow plate becomes The template of the end of the weight plate. If the long side of the hollow slab is immersed in the slab in front of the poured concrete and immersed in the slab for 10 mm, a layer of plain cement paste is withdrawn on the surface of the hollow slab and the mixture is then contacted with the hollow slab.