Pumped concrete is concrete that is transported to heights using concrete pumps rather than other means. It consists of a hopper that feeds concrete into the pump, which then pushes it through delivery pipelines. Pumped concrete has a high slump value of 50-100mm to prevent segregation and bleeding, and special measures must be taken to prevent blockages in the pipelines like careful mix design, shortening pipes, and periodic cleaning.

1. CONCRETE TECHNOLOGY
UNIT 6(CH:6)SPECIAL CONCRETE & CONCRETING
TECHNIQUES
TOPIC:PUMPED CONCRETE
BY MISS.BHAVIKA H.PATEL
LECTURER AT V.B.POLYTECHNIC,NAVSARI

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.

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.

6. VIDEO CLIP OF PUMPED CONCRET

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

9. THANK YOU