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

The effects of earthquake on spatial trusses, Evaluation of various reports...

Evaluation of various reports regarding the effects of earthquake on spatial trusses History and static In this section we aim to provide a summary report of what was happ

Explain rebound hammer - underwater non-destructive testing, Explain Reboun...

Explain Rebound Hammer - Underwater non-destructive testing? The underwater rebound hammer system is a surface hardness tester which can be employed to acquire a general condit

Integration of the strain settlement, All soils subjected to stress undergo...

All soils subjected to stress undergo strain. This will be taking place within the soil skeleton. This strain is caused by rolling, slipping, sliding and crushing at the particle c

Transition curves - geometric design of roads, Transition Curves: If ...

Transition Curves: If a vehicle travelling on a straight enters a horizontal curve abruptly, it will cause shock and sway. To avoid this, it is customary to provide a transit

Define the alternate depths - hydrologic system, Define the Alternate Depth...

Define the Alternate Depths In open channels, two alternate depths of flow have the same energy for the same flow rate. As shown in the figure, the hyperbolic plot of energy (x

Calculate the total labor cost per cubic yard, A contractor will place 90-c...

A contractor will place 90-cubic yards of concrete for a housekeeping pad on the rooftop of a 36-ft tall building. Site conditions dictate that the safest and best method of placem

Explain term - losses of prestress, Explain term - losses of prestress ...

Explain term - losses of prestress We know that with time, tendons lose some of their initial prestress (at the time of transfer of prestress). This is termed as 'losses of pre

Necessity for road drainage - road drainage, Necessity for Road Drainage: ...

Necessity for Road Drainage: Poor drainage can cause damage to the various components of a road in the following manner: (a) Water can enter the various pavement layers th

Pavement drainage, Pavement Drainage: Water enters the pavement layer...

Pavement Drainage: Water enters the pavement layers through cracks, joints and open spaces in the pavement surface. The water reaches the soil sub-grade on which the pavement

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