因为影响砼配合比的因素很多,也很复杂(如不同的使用要求、不同的施工工艺、不同的材料性能等)所以就不可能用一个能够适应各种要求的通用配方。 (1)工程特点不同,对砼的配合比有不同的要求如路面砼要求具有较高的耐磨强度;一般承重结构要求砼具有可靠的力学性能;钢筋过密的构件要求有适宜的坍落度和控制石子的最大粒径;贮水池要求砼具有较高的密实性和抗渗性能等等。 Because there are many factors that affect the mix ratio and are complex (such as different use requirements, different construction processes, different material properties, etc.), it is impossible to use a universal formula that can meet various requirements. (1) Different engineering characteristics, there are different requirements for the mix ratio of concrete, such as the requirements of road surface concrete with high abrasion resistance; general load-bearing structure requirements, reliable mechanical properties; and the over-reinforced components require appropriate declination. Degree and control of the maximum particle size of the stone; the reservoir requires high density and impermeability and so on.