Cement Mixer Truck

Working Process of HM16-D Cement Mixer Truck
 

Special HM16-D cement mixer truck are made to transport and mix concrete up to the construction site. They can be charged with dry materials and water, with the mixing occurring during transport.

They can also be loaded from a central mix concrete batching plant, with this process the material has already been mixed prior to loading. The cement mixer truck maintains the material's liquid state through agitation, or turning of the drum, until delivery.

The interior of the drum on a prices concrete mixer truck is fitted with a spiral blade. In one rotational direction, the concrete is pushed deeper into the drum. This is the direction the drum is rotated while the concrete is being transported to the building site. This is known as "charging" the mixer. When the drum rotates in the other direction, the archimedes' screw-type arrangement "discharges", or forces the concrete out of the drum. From there it may go onto chutes to guide the viscous concrete directly to the job site.

If the cement mixer truck cannot get close enough to the site to use the chutes, the concrete may be discharged into a concrete pump, connected to a flexible hose, or onto a conveyor belt which can be extended some distance (typically ten or more metres). A concrete pump provides the means to move the material to precise locations, multi-floor buildings, and other distance prohibitive locations. Buckets suspended from cranes are also used to place the concrete. The drum is traditionally made of steel but on some newer trucks as a weight reduction measure, fibreglass has been used.