Volumetric – How It Works
Our Volumetric Concrete Mixer has 3 bins or hoppers: The 2 main & largest hoppers contain sand & aggregate (gravel). The 3rd & smallest enclosed hopper contains dry cement. A revolving belt moves the sand & aggregate towards the back of the mixer.
The strength (mix design) of the concrete is altered by opening or closing the gates on the sand and the aggregate hoppers. Cement & water is introduced as the sand & aggregate enter the mixing auger. From here all the ingredients are thoroughly mixed and dispatched up to 7 metres (24ft) away from the rear of the mixer.
Additives can be put into the mix to produce a more workable concrete. A foaming agent can also be introduced. This makes small bubbles in the concrete making it strong but lighter. This concrete is used mainly for utility purposes such as covering cables in a trench. It has a 5 Kg/n strength but has the added advantage of being easy to dig through at a later date if needed, & of course less cement content… better profit.
The mixer can be mounted on a new or used truck, mounted on a trailer or placed in a fixed static position.
Cubic Metres capacities for Mobile or Stationary mixers are: 4 m3, 6 m3, 8 m3,10 m3 & 12 m3 – custom build mixers are available