Building Construction Handbook, Eighth Edition

(Nancy Kaufman) #1
Concrete Pumps ~ these are used to transport large volumes of
concrete in a short time period (up to 100 m^3 per hour) in both the
vertical and horizontal directions from the pump position to the
point of placing. Concrete pumps can be trailer or lorry mounted
and are usually of a twin cylinder hydraulically driven format with
a small bore pipeline (100 mm diameter) with pumping ranges of up
to 85„000 vertically and 200„000 horizontally depending on the
pump model and the combination of vertical and horizontal
distances. It generally requires about 45 minutes to set up a
concrete pump on site including coating the bore of the pipeline
with a cement grout prior to pumping the special concrete mix.
The pump is supplied with pumpable concrete by means of a
constant flow of ready mixed concrete lorries throughout the
pumping period after which the pipeline is cleared and cleaned.
Usually a concrete pump and its operator(s) are hired for the
period required.

Concreting Plant

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