When some customers purchase concrete mixer, they think that the larger the volume of mixer is, the better, the more economical and efficient. Although in theory, this concept is right, in practice, the larger the volume is, the larger the tank is.

罐体容积大不仅影响购车的本钱，还影响车辆功能，行车系数低，罐体越大越高，车辆稳定性差。所以车主朋友们应根据拌和车作业的工况环境，经济效益，功能、等多方面因素选择适宜的混凝土拌和车。

The large volume of the tank not only affects the cost of the car, but also affects the function of the car. The driving safety factor is low. The larger the tank, the higher the center of gravity, and the worse the stability of the car. Therefore, the owners and friends should select the appropriate concrete mixer according to the working conditions, environment, economic benefits, functions, safety and other factors.

那么究竟对于混凝土拌和车容积该怎么选？混凝土拌和车容积不能简单的以为就是罐体的容积，要有清晰的三个概念区别：

So how to choose the volume of concrete mixer? First of all, the volume of concrete mixer can't be simply considered as the volume of tank body. There should be three clear conceptual differences:

拌和车几何容积：拌和桶内实践的几何容积，是指拌和罐设，用数学方法核算出来的几何容积。

Geometric volume of mixing truck: the practical geometric volume in mixing drum refers to the geometric volume calculated by mathematical method during the design of mixing drum.

拌和动容积：拌和车可以运送的预拌混凝土量（以捣实后的体积计）。可以看成拌和车抵达工程现场所可以卸下的混凝土方量预拌混凝土容量按2400kg/m3核算。

Mixing dynamic volume: the amount of ready mixed concrete that can be transported by the mixer (calculated by the volume after compaction). It can be seen that the volume of ready mixed concrete that can be unloaded when the mixer arrives at the project site is 2400KG / m3.

拌和容积：拌和车置于水平位置，拌和桶能容纳的未经拌和的混凝土物料（包括水），并能拌和出运混凝土的量（以捣实后的体积计）。

Mixing volume: the mixer shall be placed in a horizontal position, and the mixing barrel shall be able to hold the largest amount of concrete materials (including water) that have not been mixed, and can be mixed and transported to the concrete volume (calculated by the volume after compaction).

三者的关系应该是：拌和车几何容积＞拌和容积＞拌和动容积，用户经常所说的容积应该是指搅动容积，所以在现购拌和车时，要注意区别问清车辆的拌和容积。

The relationship between the three should be: the geometric volume of the mixer > the mixing volume > the mixing dynamic volume. The volume that users often say should refer to the mixing volume. Therefore, when purchasing the mixer, pay attention to the difference between the mixing volume of the vehicle.