The mixing quality of Zhongke concrete mixer is not only related to raw materials and equipment, but also closely related to mixing time. The mixing time of the concrete mixer refers to the time from the completion of loading to the start of unloading, which can be determined according to the slump of the mixer and the capacity of the concrete mixer. Make sure to mix evenly.

　　一般中小型混凝土搅拌机的搅拌时间为1-2分钟，采用“清水浆包石法”搅拌约3分钟。强制混凝土搅拌机的搅拌时间较短，如JD200混凝土搅拌机，只能使用30秒。总而言之，可以根据施工的实际情况，通过试验来确定。坍落度小(机械捣固1-2cm，人工捣固2-4cm)、掺合料、细砂混凝土，可根据实际情况延长搅拌时间。

　　Generally, the mixing time of small and medium-sized concrete mixers is 1-2 minutes, and the mixing time is about 3 minutes by using the method of "water slurry and stone wrapping". The mixing time of the forced concrete mixer is short, such as jd200 concrete mixer, which can only be used for 30 seconds. In a word, it can be determined by test according to the actual situation of construction. Small slump (mechanical tamping 1-2cm, manual tamping 2-4cm), admixture, fine sand concrete, the mixing time can be extended according to the actual situation.