2. WHAT IS PUMPED CONCRETE?
Pumped concrete is the concrete which is
transported to heights by means of pumping
using concrete pumps. This method is used
where large quantity of concrete work is
involved at greater height, where other means
of transporting is not easy to do.
3.
4. The system for pumping concrete essentially
consists of a hopper into which the concrete is
discharged from the mixer, which in turn, feeds
the concrete pump itself and finally the
delivery pipelines through which the concrete
is delivered.
5. PROPERTIES OF PUMPED CONCRETE
Its slump value of 50mm to 100 mm
or more.
Materials bind under pump
pressure.
There is no segregation and
bleeding due to concreting.
7. CAUSES OF BLOCKAGE IN PIPELINES
Operator’s errors
High temperatures
Pipelines & joint deficiencies
Too many & too sharp bends
Not well cleaned pipeline.
8. MEASURES TO CLEAR BLOCKAGE
Careful design of concrete mix
Shortning the pipeline
Continuous pumping operations
Time to time washout