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

Principle for conducting surface regularity test, Question What is dist...

Question What is distinction in principle for conducting surface regularity test and sand test? Answer Purpose of surface regularity test is to assess riding quality

Define alkali aggregate reaction - chemical deterioration, Define Alkali Ag...

Define Alkali Aggregate Reaction - Chemical deterioration? Sometimes high alkali cement reacts with minerals in certain aggregates and forms expansive compounds resulting into

Water sources and requirements, Water Sources and Requirements: In thi...

Water Sources and Requirements: In this part, we have discussed: (a) Basic concepts in planning of water supply schemes. (b) Various types of water requirement. (c) S

Concrete technology, chemical compositions of Rapid Hardening Cement

chemical compositions of Rapid Hardening Cement

Soils, how to classify soils materials

how to classify soils materials

Explain remote sensing technique, Q. Explain Remote sensing technique? ...

Q. Explain Remote sensing technique? Remote sensing is a science or an art of obtaining the information about an object, area or a phenomenon through analysis of data acquired

Shear stress, difference between bending stress and shear stress

difference between bending stress and shear stress

Determine the normal and shear stress elements, Determine the normal and sh...

Determine the normal and shear stress elements: The state of stress at a point is given through the stress components σ x = 70 MPa, σ y = 10 MPa, and τ xy = - 40 MPa. Using

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