Concrete mixer

The mixer truck is used to transport the concrete from the pump station to the construction site. During the transportation, the mixing drum will always rotate to ensure that the transported concrete will not solidify. After the concrete is transported, the interior of the mixing drum is usually washed with water to prevent the residual concrete from hardening and occupying space, so as to reduce the volume of the mixing drum.

According to the water content of concrete transported by concrete mixer truck, there are three types of mixer truck: wet material type, dry material type and semi dry material type. Wet concrete mixer is mostly used in China, which can transport concrete produced by mixing plant (station) or aggregate (sand, stone), cement and water mixed according to proportion. During transportation,

Keep mixing the wet materials slowly to prevent the initial setting and segregation of concrete during transportation. However, the time from production to pouring of concrete shall not exceed 1.5h to avoid concrete setting. Therefore, it is necessary to transport over longer distances

In this case, dry and semi dry materials shall be transported by mixer trucks. The dry aggregate and cement can be directly loaded into the mixing drum of the truck according to the ratio, and the dry materials in the drum can be mixed during transportation

Vehicles will arrive at the construction site or add water at the construction site to complete concrete mixing. The aggregate and cement in the concrete transported by the semi dry mixer truck are also prepared according to the proportion and contain a certain amount of water, but the water content cannot meet the pouring requirements. It is necessary to add water and mix at the construction site when the vehicle is about to reach the construction site or at the construction site.