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

Important items during level crossing inspection, Q.7.- Write the important...

Q.7.- Write the important items to be inspected during level Crossing inspection. How do you take census of traffic at level crossing. Ans.-Important items to be inspected duri

Differences between open shield and closed shield, Q. Differences between o...

Q. Differences between open shield and closed shield? Open shield type TBM refers to those providing lateral support only. They can be further classified into single shield and

Beam, Classification of beam

Classification of beam

Why are steel plates inserted inside bearings, In designing of elastomeric ...

In designing of elastomeric bearings, why are steel plates inserted inside Bearings?

Importance of general and subsidiary rules, Q. What is the importance of Ge...

Q. What is the importance of General and subsidiary rules. What is the main differences between the two. Ans.- Importance of General and subsidiary  rules - General and su

DECK ENGINEERING CALCULATIONS, We need eng. calcs for a deck 17''x 10 feet...

We need eng. calcs for a deck 17''x 10 feet.attach to the guest house. calculations will be for 230 psi snow load . in the city of Mammoth lakes Ca. deck is supported for 3 girder

Sewer manhole, minimun difference in level of inlet and oulet pipe level in...

minimun difference in level of inlet and oulet pipe level invert in manhole

Define abrasion of steel structures - inspection of bridge, Define Abrasion...

Define Abrasion of steel structures? Abrasion of steel structures can generally be recognised by a worn, smooth, polished appearance of the surface.  Abrasion is caused by cont

Show the probable type of clay mineral, The liquid limit and plastic limit ...

The liquid limit and plastic limit of clay are 100% and 25%, respectively. From a hydrometer analysis it has been found that the clay soil having of 50% of particles smaller than 0

Plagiarism, what is the importance of plagiarism in civil Engeneering

what is the importance of plagiarism in civil Engeneering

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