混凝土以其合乎需要的结构特性而著称,但是,它的表面不美观,颜色不均匀。随着人们对环境美化要求的不断提高,混凝土工业需要了解产生不美观外表的原因,然后再控制其表面质量。有一些人希望混凝土表面没有缺陷。但是一些建筑师们,却觉得设法保留一定数量的气泡会给混凝土脱模后的表面增添特色。在这些建筑师看来,无缺陷的混 Concrete is known for its desirable structural characteristics, but its surface is not beautiful and its color is not uniform. With the continuous improvement of people’s demands for environmental beautification, the concrete industry needs to understand the causes of the unsightly appearance and then control its surface quality. Some people hope that the concrete surface is free from defects. However, some architects feel that trying to retain a certain amount of air bubbles will add features to the surface of concrete after demoulding. In the eyes of these architects, there is no flaw in the mix.