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为预防混凝土中钢筋固定不牢,出现露筋质量事故,人们习惯用水泥砂浆垫块支托钢筋骨架,这样的确有效地固定了钢筋,保证了钢筋保护层厚度,但美中不足的是这种断面为方形的长方体垫块,由于与模板接触面积较大,浇筑混凝土时很准被混凝土混合料浆液全部包裹,露于混凝土构件外表,使其扰如“补丁”一般,严重影响了构件的外观质量。为弥
In order to prevent the reinforcement from being fixed firmly in the concrete and cause the quality of exposed bars, people are accustomed to using a cement mortar pad to support the reinforcing steel frame. This effectively fixes the steel bars and ensures the thickness of the protective layer of the steel bars. However, in the ointment, this section is Square cuboid pads, due to the large contact area with the stencil, are completely quasi-wrapped by the concrete mixture slurry and exposed on the concrete member surface, causing it to interfere with the “patch” and seriously affecting the appearance quality of the component. Miya