Concrete mixer (concrete-mixing machine, concrete mixer truck) is a type of construction equipment intended for transportation of the concrete mixture from the producer to the place where the building works are conducted.
Concrete mixer is a revolving reservoir (agitator body) equipped with a mechanism of automated concrete unloading (various constructions enable unloading both 'backward' and 'forward' relative to the driver's cab), which is mounted on the frame of a standard truck or on the special auto chassis. The volume of the agitator body is usually 2 - 13 m3 (vehicles with the reservoir of 6 - 9 m3 are used most often). Depending on the model, the agitator body may be powered both by the chassis' engine and a separate engine, and the unloading process may be operated both from the driver's cab and from off-vehicle control panel.
The main domain where concrete mixers are used is, definitely, construction works, which nowadays can hardly be imagined without application of this type of equipment. The revolving reservoir is intended for keeping the concrete mixture homogeneous, as well as for protecting the mixture from precipitation and direct sunlight in the course of transportation. It is also important to understand that the concrete mixers are capable not only of transporting the concrete, but also of preparing it from the ingredients loaded into the agitator body (water, cement, different fillers).
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