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

Soil testing, what is black cotton soil in dry condition

what is black cotton soil in dry condition

Compute the degree of saturation, The maximum dry density and optimum moist...

The maximum dry density and optimum moisture content of a soil from standard proctor's test are 18 kN/m 3 and 16% respectively. Compute the degree of saturation of the sample,

Keywords of road pavements, Keywords of Road Pavements: Pavement : T...

Keywords of Road Pavements: Pavement : That part of a road which structurally supports the vehicles travelling on a road. Flexible Pavement   : A layered system of pave

Define the term- erection stresses, Define the term- erection stresses ...

Define the term- erection stresses The creep loss due to live load stress, erection stresses and other stresses of short duration may be ignored. The loss of prestress due to

Determine the reliable moment capacity, Figure 2 details a typical T-beam u...

Figure 2 details a typical T-beam unit in a beam and slab floor with a span of L = 10 m. Determine the reliable moment capacity M ′ for the T-section shown. Take f c ′ = 32

Explain dissolved impurities in water, Q. Explain Dissolved Impurities in w...

Q. Explain Dissolved Impurities in water? The impurities which are caused by the action of water and water forming Acids with organic matter and carbon dio

Can you determine the quantity of apron stone, Q. Can you determine the Qua...

Q. Can you determine the Quantity of apron stone? Quantity should be sufficient to cover the scoured face down to maximum depth of scour obtained using scour factor c of 2.5 at

Premix carpet - road pavements, Premix Carpet: An open graded premix ...

Premix Carpet: An open graded premix carpet, commonly called premix carpet (PC), is an open graded premixed material laid to a thickness of 20 mm and rolled, followed by a se

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