PUMPING
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Pumping provides faster placement of concrete compared to manual methods.
It allows access to difficult locations such as elevated or underground sites.
Continuous pouring improves structural quality by eliminating Cold Joints.
Process - Preparation involves setting up the pump and pipeline, ensuring access and safety, inspecting for leaks, and applying lubricating grout or slurry to reduce friction.
Most Pumps use Hydraulic Pistons. One piston draws concrete into the pump while the other pushes it into the pipeline, creating a continuous flow.
After Pumping, the system is cleaned using water and Cleaning Balls to prevent hardened concrete from clogging the pipes.
Pumping Equipment
Boom Pumps - Truck-mounted and include a robotic arm (Boom) that places concrete with precision. They are used for large-scale projects and tall structures, with high output capacity.
Line Pumps - Mounted on Trailers. They are suited for smaller jobs and locations that require precise placement.
Hopper - The Hopper holds concrete from the mixer before it is pumped. It includes agitators to keep the mix uniform and prevent blockages.
Considerations
Concrete Mix must be designed to be Pumpable with the right consistency and aggregate size.
Longer distances and higher Placements require greater Pumping Pressure.
Blockages can occur due to poor mix or air pockets - Safety is essential as Hose Whipping and Pressure Buildup present risks, requiring experienced operators.
Force Needed for Pumping - Quiz
Which requires the most Force to Pump?
