The large volume of the tank not only affects the cost of purchasing the vehicle, but also affects the vehicle performance. The driving safety factor is low. The larger the tank, the higher the center of gravity, and the poor vehicle stability. Therefore, the owner friends should select the appropriate concrete mixer according to the working conditions, environment, economic benefits, performance, safety and other factors.
混凝土搅拌车容积不能简单的认为就是罐体的容积，要有明确的三个概念区分：
First of all, the volume of concrete mixer truck can not be simply regarded as the volume of tank, but should be clearly distinguished by three concepts:
搅拌车几何容积：搅拌桶内实际的几何容积，是指搅拌罐设计时，用数学方法计算出来的几何容积。
Geometric volume of mixer truck: the actual geometric volume in the mixing drum refers to the geometric volume calculated by mathematical method during the design of mixing tank.
搅拌动容积：搅拌车能够运输的预拌混凝土量（以捣实后的体积计）。可以看成搅拌车到达工程现场所能够卸下的混凝土方量预拌混凝土容量按2400kg/m3计算。
Mixing dynamic volume: the amount of ready mixed concrete that can be transported by the mixer truck (calculated by the volume after tamping). It can be regarded as the concrete volume that can be unloaded by the mixer truck when it arrives at the project site. The capacity of ready mixed concrete is calculated as 2400KG / m3.
搅拌容积：搅拌车置于水平位置，搅拌桶能容纳的未经搅拌的混凝土物料（包括水），并能搅拌出运混凝土的量（以捣实后的体积计）。
Mixing volume: the mixer truck is placed in a horizontal position, and the mixing bucket can hold the largest concrete materials (including water) that have not been mixed, and can mix the amount transported to the concrete (calculated by the volume after tamping).
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三者的关系应该是：搅拌车几何容积＞搅拌容积＞搅拌动容积，用户经常所说的容积应该是指搅动容积，所以在现购搅拌车时，要注意区分问清车辆的搅拌容积。
The relationship between the three should be: geometric volume of the mixer > mixing volume > mixing volume. The volume often mentioned by users should refer to the mixing volume. Therefore, when purchasing the mixer, pay attention to distinguish the mixing volume of the vehicle.
