Concrete pump

Due to their lower pump volume, line pumps are used for smaller volume concrete placing applications such as swimming pools, sidewalks, single family home concrete slabs and most ground slabs.

Until the early 20th century, concrete was mixed on the job site and transported from the cement mixer to the formwork, either in wheelbarrows or in buckets lifted by cranes.

In 1927, the German engineers Max Giese and Fritz Hull came upon the idea of pumping concrete through pipes.

Such piston-style pumps can push cylinders of heterogenous concrete mixes (aggregate + cement).

[4] Concrete pump drives are now exclusively hydraulic, so control options vary between individual manufacturers.

Nowadays, fluid pressures of up to 400 bar (5,800 psi) and flow rates of up to 200 m3/h (260 cu yd/h) can be achieved, while using piston-type pumps.

Because it is a fluid, concrete can be pumped to where it is needed. Here, a concrete transport truck is feeding concrete to a concrete pumper, which is pumping it to where a slab is being poured.
Pumping concrete into aluminium concrete formwork in Mexico.
Operating principle of piston pump with seat valves
BRF 42.14 H pump