本文向读者介绍水泥地面常见的一些质量问题和预防、补救办法。离析所谓离析,就是指新浇筑的混凝土中粗、细集料分离的现象。常见的例子是粗骨料颗粒从拌合物中分离出来,或者是表面的砂子和水泥分离,形成一层净水泥浆,复盖在砂层上面。混凝土中水分过多、坍落度太大是造成离析的主要原因。另一方面,在混凝土面层泌水的情况下 This article introduces the reader to some of the common quality problems and prevention and remedies on the cement floor. Segregation The so-called segregation refers to the phenomenon of separation of coarse and fine aggregates in newly cast concrete. A common example is the separation of coarse aggregate particles from the mix, or the separation of the surface sand and cement to form a layer of net cement slurry over the sand layer. Too much water in the concrete and too much slump are the main causes of segregation. On the other hand, in the case where the concrete surface leaks water