Mixing method of concrete mixer

According to the mixing method, there are two types: self-falling mixing and forced mixing.

The self-falling mixer places the mixture in a rotating mixing drum. As the mixing drum rotates, the blades in the drum lift the mixture to a certain height, and then it falls freely by its own weight. Repeat this over and over again until evenly mixed. This mixer generally mixes plastic and semi-plastic concrete.

In a forced mixer, the mixing drum does not move, and the mixing is forced by blades evenly placed on the rotating shaft inside the drum. This kind of mixer has good mixing quality and high production efficiency; but it consumes a lot of power and the blades wear out quickly. Generally suitable for mixing dry hard concrete.

Precautions for mechanical mixing:

1. Pre-mix once, that is, rinse the mixture first, so as not to affect the mix ratio of the mixture during formal mixing. Start the mixer, add gravel, cement, and sand into the mixer in sequence, mix evenly, and then slowly add water.

The total addition time should not exceed 2 minutes. After all the water is added, continue mixing for 2 minutes.

2. Unload the mixture from the mixer, pour it on the mixing bowl, and then manually mix it for 1 to 2 minutes before measuring the slump or forming the specimen. All operations must be completed within 30 minutes from the time when water is added.

<< Previous：How is the mobile mixing plant transported to the site?
<< Next：The overall structure of HZS240 concrete mixing station