论文部分内容阅读
工程防腐作法,一般分为两大类:一是复合防腐构造,如图1所示的混凝土排污坑,本体是钢筋混凝土,坑内壁做玻璃钢聚酯砂浆防腐层。又如硫酸干燥塔,壳体由普通钢板制作,内衬瓷砖防腐层。二是直接采用结构防腐材料,这种材料强度高,既能防腐,又能承受结构荷载,做主体结构,如整体式不锈钢和玻璃钢塔槽及烟道管道等。但无论是采用复合防腐构造或直接采用结构防腐材料,从防腐功能来说,都必须同时具有耐腐蚀、抗渗和整体性强三个基本要求,缺一不可,否则就不能起防腐作用。实践证明,基层处理不当,会引起防腐层空鼓裂缝
Engineering anti-corrosion methods are generally divided into two categories: First, the composite anti-corrosion structure, as shown in Figure 1 concrete drain pit, the body is reinforced concrete, the pit wall to do fiberglass reinforced polyester mortar coating. Another example is a sulfuric acid drying tower. The shell is made of ordinary steel plate and lined with a ceramic coating. The second is the direct use of structural anti-corrosion materials. This material has high strength and can both resist corrosion and withstand structural loads. It is the main structure, such as integrated stainless steel and fiberglass towers and flue ducts. However, whether it is the use of composite anti-corrosion structure or direct use of structural anti-corrosion materials, from the anti-corrosion function, it must have three basic requirements of corrosion resistance, impermeability, and integrity, are indispensable, otherwise they can not play a role in anti-corrosion. Practice has proved that improper treatment at the grassroots level will cause cracks in the anti-corrosion layer.