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基础钢筋混凝土构件是处在潮湿环境下的构件,其钢筋的混凝土保护层厚度应比处于正常环境下的构件混凝土保护层厚度增加,一般增加厚度为10mm。在验收基础工程项目时发现,有些构件钢筋混凝土保护层厚度偏小,如基内柱、基础梁、地圈梁等。现就对基础构件钢筋的混凝土保护层厚度偏小产生的原因及防治方法介绍如下。
The basic reinforced concrete member is a member in a wet environment, and the thickness of the reinforced concrete protective layer of the reinforcing steel should be greater than the thickness of the concrete protective layer of the member under normal circumstances, and the general increase thickness is 10 mm. In the acceptance of basic engineering projects, it was found that the thickness of protective layers of some components of reinforced concrete is relatively small, such as base columns, foundation beams, and ground beams. The reasons for the small thickness of the concrete protective layer of the basic component steel reinforcement and the prevention and control methods are described below.