地下室混凝土工程施工中,有一个部位极易出现质量事故,这就是与底板一起浇筑的高300毫米的矮墙(下图)。一、事故特征主要表现为露筋、蜂窝,有时为孔洞。分布状况为:墙内侧缺陷比墙外侧多;靠近泵车一侧外墙的缺陷比远离泵车一侧 In the construction of the basement concrete works, there is a site that is prone to quality accidents. This is a 300 mm high wall that is poured together with the floor (bottom). First, the characteristics of the accident are mainly exposed bars, honeycombs, and sometimes holes. The distribution is as follows: there are more defects on the inner side of the wall than on the outside of the wall;