What is the significance of standard consistency test?

Finding out standard consistency of cement is essential because the amount of water added in cement affect the setting time of cement, Less water added than this standard consistency would not complete chemical reaction thus resulting in the reduction concrete of strength and more water would increase water-cement …

What do you mean by normal consistency What is its significance?

The normal consistency or standard consistency of a cement is defined as that consistency which will permit the Vicat plunger of 10 mm diameter to penetrate to a point 5 mm to 7 mm from the bottom of the Vicat mould when the cement paste is tested as described in procedure.

What is the significance of setting time of cement?

When cement is mixed with water, it hydrates and makes cement paste. This paste can be molded into any desired shape due to its plasticity. Within this time cement continues with reacting water and slowly cement starts losing its elasticity and starts to harden. This complete cycle is called Setting time of cement.

What is the significance of initial setting time?

Initial setting time is the time when the paste starts losing its plasticity. Initial setting time test is important for transportation, placing and compaction of cement concrete. Initial setting time duration is required to delay the process of hydration or hardening.

Is p2 a 4031?

This standard (Part 2) covers the procedure for determining by Blaine air permeability apparatus, the fineness of cement as represented by specific surface expressed as total surface area in cm2/g. NOTE – This method is also being used for determination of fineness of various other materials.

What is the significance of initial and final setting time of cement?

Initial setting time test is important for transportation, placing and compaction of cement concrete. Initial setting time duration is required to delay the process of hydration or hardening. Final setting time is the time when the paste completely loses its plasticity.

What is the standard consistency of cement?

The standard consistency of cement is that the amount of water required for the cement paste to permit the Vicat plunger to penetrate to a point 5-7mm from the bottom is known as standard or normal consistency of cement.

How much water is required to attain proper strength of cement?

So, from this study it is clear that standard amount of water is required to attain proper strength of cement. For example; The standard consistency or normal consistency of ordinary Portland cement varies between 25-35\%.

How to increase the strength of cement?

In order to attain the required cement strength, we need to add the right amount of water. Water less than the standard consistency would not initiate the chemical reaction between water and cement resulting in the strength of cement. Water more than the consistency result in excess water and strength reduction.

Why is the water-cement ratio important in cement production?

Excess water makes it wet and low water makes it dry. Thus the maintaining the optimum water-cement ratio is most important. A standard consistency test of cement is performed to find out the water content required to produce a cement paste of standard consistency.