Pulverized fly ash as cement replacement, Civil Engineering

Assignment Help:

Q. Pulverized fly ash as cement replacement?

Pulverized fly ash is a type of pozzolans. It is analuminous or siliceous material that possesses no binding ability by itself. When it's in finely divided form, they may react with calcium hydroxide in the presence of moisture to form compounds with cementing properties.  

At the time of cement hydration with water, calcium hydroxide is formed and it is non-cementitious in nature. Though when pulverized fly ash is added to calcium hydroxide, they react to yield calcium silicate hydrates that is highly cementitious. This leads to improved concrete strength. This explains how pulverized fly ash may be used as cement replacement.


Related Discussions:- Pulverized fly ash as cement replacement

High and narrow beams, Question Give a reason that why are high and na...

Question Give a reason that why are high and narrow beams not desirable in concrete piers? Answer Supported on past experience in other, high and narrow beams after

Analyse the state of stress, Analyse the state of stress: For the cros...

Analyse the state of stress: For the cross-section shown in above figure, let us take b = 100 mm, d = 300 mm and M = 9 × 10 7 N mm and Q = 18 × 10 4 N and analyse the state

W.M.M., What is W.M.M. roads? Where its used ?

What is W.M.M. roads? Where its used ?

Illustrate the term - failure due to rupture of steel, Failure Due to Ruptu...

Failure Due to Rupture of Steel This mode of  failure is likely in lightly reinforced concrete members in which the ultimate strength of  steel is attained before the concrete

Shape and soundness test - testing of aggregates, Shape and Soundness Test ...

Shape and Soundness Test - Testing of aggregates: Shape For providing a good interlock and strength, the aggregates should be cubical in shape. Elongated and flaky pa

Rcc structure, neea BM & SF CALCULATIONS & DWNGS

neea BM & SF CALCULATIONS & DWNGS

Theory of elasticity and plasticity, derivation for strain energy stored in...

derivation for strain energy stored in a body due to torsion

Main dissimilarity among cement plaster and cement render, Question Wha...

Question What is main dissimilarity among cement plaster , cement render and cement screed ? Under what state each of above can be used? Answer Purpose of plaster

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