碾压砼正在迅速地变成一种普通的建筑材料。它的水泥含量比普通砼要少些,需要的浇筑设备也相当简单。碾压砼往往用于大坝工程中,因为大坝通常需要胶结料含量较低的砼,以便减少温度裂缝的危险性。现在越来越多的路面,特别是重负路面和停车场,也采用碾压砼,因为这种砼的表面结构不会引起明显的行车问题。 在大坝中使用碾压砼(RCC),对其抗冻性一般是不太关心的,因为明显暴露在冻结环境中的大坝部分是用普通的引气枉浇筑的。然而对于路面来说,因为在较干的拌合物中(例如 Roller compactors are rapidly becoming a common building material. Its cement content is less than that of ordinary concrete, and the required pouring equipment is also quite simple. Roller crucibles are often used in dam projects because dams often require crucibles with low binder content in order to reduce the risk of temperature cracks. Nowadays, more and more roads, especially heavy-duty roads and parking lots, also use roller compactors because the surface structure of the concrete does not cause obvious driving problems. The use of roller compacted concrete (RCC) in dams is generally not a concern for their frost resistance because the part of the dam that is clearly exposed to the frozen environment is poured with ordinary bleed air. However, for the pavement, because it is in a dry mixture (for example,