例如收费岛有很多种，一些公路防撞岛，高速安全岛，都可以称之收费岛，这种水泥的预制，主要的塑形方式就是采取模板模板独立加工，要知道施工现场的混凝土都是非常紧张的，对一般的施工环节都是要用到的，随着要求质量的逐步提升，这类混凝土必须要达到高强度，抗震性特性才可以，所以宁可成本高一些也要保证预制成型后的收费岛更结实才行，这时候不仅对施工进度不受影响，更重要的是还不会造成返工的现象。
For example, there are many kinds of toll islands. Some highway anti-collision islands and high-speed safety islands can be called toll islands. The main molding method of this kind of cement prefabrication is to adopt the independent processing of formwork. You should know that the concrete on the construction site is very tense and needs to be used for general construction links. With the gradual improvement of the required quality, this kind of concrete must achieve high strength and seismic characteristics, Therefore, it is better to have a higher cost and ensure that the prefabricated toll island is stronger. At this time, it will not affect the construction progress and, more importantly, it will not cause rework.