Pumping for concreting works, Civil Engineering

Assignment Help:

Question
What are the key problems if use pumping for concreting works?

Answer
In pumping operation, force exerted by pumps have to overcome friction involving concrete and pumping pipes, weight of concrete and pressure head when placing concrete above pumps. In actuality, as only water is pump able, it is water in concrete that transfers force.

Major problems associated with pumping are effect of isolation and bleeding. To rectify these adverse effects proportion of cement is increased to improve cohesion sequentially to decrease segregation and bleeding. On other hand, the proper selection of aggregate grading helps to get better pump capability of concrete.

 


Related Discussions:- Pumping for concreting works

Flow diagram of wet process, what type of basin in which is stored and wha...

what type of basin in which is stored and what is silos what is channel and correcting basins what type of clinker is formed

Horizontal curves - geometric design of roads, Horizontal Curves: Whe...

Horizontal Curves: When a vehicle of mass m moves on a curve of radius R with a speed of v (m/sec) (as shown in Figure 1) it is subjected to a centrifugal force equal to:

How the water table may rise to the ground surface, State the size of a squ...

State the size of a square footing at the ground level to transmit a load of 900 kN in sand weighing 18 kN/m 3 and having an angle of shearing resistance of 36° (N  = 46, Nq = 43)

Describe types of spurs, Q. Describe types of Spurs? Spurs can be of va...

Q. Describe types of Spurs? Spurs can be of varied types. They may be either permeable or impermeable. Permeable spurs are open structures constructed by driving wooden balties

Pycnometer., To determine the specific gravity of fine aggregate (sand) by ...

To determine the specific gravity of fine aggregate (sand) by Pycnometer.

Failure analysis in designing of a structure, Modes of failure • For sa...

Modes of failure • For safe design, a knowledge of the possible modes of failure is also necessary, e.g. failure of the structure could occur due to - Tensile fracture due t

Raking piles of bridge abutment placed under an embankment, Question It sho...

Question It should be necessary that raking piles of a bridge abutment be placed under an embankment ? Answer For a bridge abutment to be supported on raking piles with div

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd