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某商品住宅楼工程,地下1层,地上28层,为剪力墙结构。设计墙体的混凝土强度等级1~4层为C40,5~6层为C35,7层以上墙板和1~6层顶板均为C30。9号楼的4层西段有几道墙体混凝土浇筑后,由于墙体模板拆模过早,混凝土在水化热阶段不能承担自身的重量而变形,模板把表面混凝土成片地粘下来,造成表面空鼓、蜂窝、麻面、凹陷、竖向和横向裂缝等肉眼可见的严重质量缺陷。主体结构检测时,发现竖向裂缝局部最宽达2mm,且强
A commodity residential building project, 1 basement, 28 floors above, for the shear wall structure. The strength of the design of the concrete wall of the first floor of the C40 is C40, 5 to 6 layers of C35, 7 and more wall panels and 1 to 6 layers of roof are C30.9 Building 4 West Section has a few walls of concrete After pouring, due to premature demolition of the wall template, concrete can not bear the weight of its own deformation during the hydration stage, the template sticks the concrete surface into pieces, resulting in surface hollowing, honeycomb, pitted, hollow, vertical And horizontal cracks and other macroscopic serious quality defects. The main structure of the test, found that the vertical cracks up to a maximum of 2mm, and strong