The method in which the fresh concrete is pumped to the area where the concreting work to be done is called as pumped concrete. For small work, concreting can manually be done, but for large scale work, concreting is efficiently done by pumping.
Concrete pumps are generally mounted on a truck or on a trailer. Pumps can be operated by electric power or diesel. Pipeline pumping system has a diameter between 100mm to 180mm. Diameter size of 125mm is must probably adopted for pumping the concrete.
Modern and advanced handy or portable concrete pumps have more power, high capacity and absolutely reliable hydraulic system and these pumps can take the fresh concrete to a height near about 600 m and also can take the concrete in horizontal distance near about 200 m.
Pumps have fully hydraulic, compact and dirt resistance control system. Hydraulic pump is output regulated and hence require less power utilization at an ideal speed and pressure.
Taper and a clamping device is provided to the outlet portion of the pump so as to connect the pipeline. The outlet portion is easy to clean and also has a simple side swing. The agitator maintains the concrete in an agitated form in between two batches of concrete fed into the hopper.
The concrete pump unit is mounted one the chassis of a tuck and drive of the hydraulic pump is driven from the engine of truck directly. Water pump is joined to the water tank and it is driven hydraulically.
The pump capacity is in m3/hr and it depends on a distance of pumping the concrete, diameter of delivery line and the maximum line pressure.
Concrete pumping capacity depends upon the following factors:
Following are the advantages of pumping the concrete for casting the various member of the structures:
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