Question: What Is The Normal Consistency For OPC?

What is meant by normal consistency of cement?

The standard consistency or normal consistency of a cement paste is defined as the amount of water (in percentage by weight of dry cement) that permits the vicat plunger to penetrate to a depth of 5 to 7 mm from the bottom of the vicat mould..

What is the advantage of PPC over OPC?

It generates less heat of hydration at a low rate than ordinary Portland cement. Reduction in permeability of PPC offers many other advantages, such as better durability than opc 53 cement.

Is Ultratech OPC or PPC?

Ultratech and Grade: PPC and OPC ULTRATECH CEMENT, 50 KGPackaging Size50 KGBrandUltratechGradePPC , OPC , SUPERPackaging TypeBagCement GradeGrade 43, Grade 531 more row

What is final setting time?

The final setting time is the time elapsed between the moment the water is added to the cement, and the time when the paste has completely lost its plasticity and has attained sufficient firmness to resist certain definite pressure.

What is the normal consistency of PPC?

The Standard or Normal consistency for Ordinary Portland cement varies between 25-35%. To prepare a mix of cement paste of Standard consistency 25-35% of water is added to cement. To explain in detail Let us assume a standard consistency is 30%.

Which is better OPC or PPC?

PPC has an edge on OPC as PPC has slower rate of heat of hydration. Thereby PPC is prone to less cracks & reduced shrinkage), better workability and finishing (as fly ash based cement are spherical in shape and finer in size).

Why normal consistency is determined?

The consistency of cement paste is defined as the percentage of water requirement of cement paste at which the viscosity of paste in such a way that it determines the amount of water needed to make a paste. It is necessary to determine consistency because the amount of water affects the setting time of the cement.

What is the standard consistency?

The standard consistency of cement is that consistency, which permit the vicat plunger to penetrate to a point 5 to 7mm from the bottom of the vicat mould when tested. Procedure to determine the quantity of water required to produce a cement paste of standard consistency is described below.

Which cement has maximum percentage of c3s?

The percentages of (C2S) and (C4AF) are relatively high and (C3S) and (C3A) are relatively low. A limitation on this type is that the maximum percentage of (C3A) is seven, and the maximum percentage of (C3S) is thirty-five. This causes the heat given off by the hydration reaction to develop at a slower rate.

Which cement is costly OPC or PPC?

Cost. The cost of OPC is around 300 rupees per bag which is slightly more expensive than PPC. Whereas in the case of PPC, the expensive clinker is replaced by pozzolanic Material such as fly ash hence the price of PPC is slightly less than who OPC.

What is the normal consistency for Ohpc?

Standard consistency of OPC–FA–SF–GGBS.

Which cement has highest compressive strength after 3 days?

For Portland Pozzolana Cement But the strength gaining percentage varies for different brands of cement. 2. For Brand C8 the minimum strength gain for 3 days is 32.95%. While brand C6 has maximum 63.90 % strength gain for 3 days.