Hi friends, you are welcomed in the world of Civil Allied Gyan. Here I have explained about determination of the required quantity of water to produce a cement paste of normal consistency and standard consistency of cement paste.
Contents:
What
is The Normal or Standard Consistency of a Cement Paste?
Factors
That Affect the Required Quantity of Water to Produce a Cement Paste of Standard
Consistency:
The Required Quantity of Water to Produce a Cement Paste of Standard Consistency:

How to Determine Required Quantity of Water to Produce a Cement Paste of Standard Consistency?
The Test ‘normal consistency or standard
consistency test of cement paste’ is used to determine required quantity of
water to produce a cement paste of standard consistency. It is necessary to
fix the quantity of water to be mixed in a cement paste in each case for
finding out initial setting time of cement, final setting time of cement,
soundness of cement and compressive strength of cement paste.
The percentage of water required to produce a cement paste of
standard consistency as taken as the minimum water required for complete
hydration of cement particles. That means, in any case, the working Water
Cement Ratio (W/C Ratio) cannot go below the normal consistency of the cement
paste.
The normal or standard consistency of a
cement paste is defined as that consistency which will permit the Vicat
plunger to penetrate to a point 5 mm to 7 mm from the bottom of the Vicat
mould. It is obtained as per IS: 4031 (Part 4)1988.
Consistency test of cement gives us the workability of cement. It should not be too dry or too liquid form.
VicatApparatus 
Factors That Affect the Required Quantity of Water to Produce a Cement Paste of Standard Consistency:
We determine the required quantity of water to produce a cement
paste of standard consistency by normal or standard consistency test of a
cement paste and the Normal consistency of cement paste depends
upon the factors such as temperature and fineness of cement.
Higher the temperature and higher the fineness of cement results higher the
normal consistency of cement and vice versa.
Standard consistency of cement (water demand
ratio) increases with increase in fineness of cement, because as the particles
are ground finely the total surface area increases and the water needed
to wet the surface of these particles will also be more.
The result is merely the water/cement ratio expressed as a
percentage. There is no accurate value for this question. It may vary with
respect to concreting, plastering, tiling, etc. Typical values are in the range
of 26% to 33%.
Read more:
Determination of normal consistency or standard consistency of cement paste by Vicat apparatus including definitions, apparatus, IS code, test procedure, observations, formula, result and lab reports and much more.
Determination of normal consistency or standard consistency of cement paste by Vicat apparatus including definitions, apparatus, IS code, test procedure, observations, formula, result and lab reports and much more.
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