一、前言 钢筋混凝土结构具有价廉、坚固和耐久的特点,是广泛用于建造各种建筑物、桥梁和烟囱等的基础材料。然而,如同世间一切事物都有其优缺点一样,混凝土也不是完美无缺的,近几年来电视和报纸大量报导了混凝土的弱点。众所周知,涂装有二个作用:一是起美化作用;二是保护被涂物。如果采用涂膜保护,对混凝土的开裂、剥落和钢筋腐蚀等能起一定的作用。当混凝土所产生的缺陷不是本身的原因,而是外来因素引起时,涂装显得更有必要。 I. INTRODUCTION Reinforced concrete structure is cheap, strong and durable. It is widely used to construct various kinds of basic materials such as buildings, bridges and chimneys. However, like everything else in the world has its advantages and disadvantages, concrete is not perfect. In recent years, television and newspapers have reported extensively on concrete weaknesses. As we all know, painting has two roles: one is to beautify the role; the other is to protect the object being coated. If the use of film protection, cracking of concrete, spalling and corrosion of steel can play a role. When the concrete defects caused by not their own reasons, but caused by external factors, the painting is even more necessary.