Pros of PPC over OPC – 01. The heat of hydration of PPC is lower than that of OPC. Hence it is the best choice for mass concreting.02. PPC has higher fineness than OPC. Therefore it has lower permeability and as a result it has high durability.03. PPC has high durability than OPC which means the structure will last longer and have longer life.04.

• PPC is more resistant towards the attack of sulphates, alkalies, chlorides and chemicals as compared to OPC.05.
• PPC is environment friendly as it utilises the by-products from the coal fired thermal stations.
• Therefore it is green material, hence ecofreindly and helpful in achieving green rating.06.
• Concrete produced by using PPC is more cohesive.

It can be easily pumped.07. PPC is cheaper and more sustainable as compared to OPC.08. The pozzolana present in the cement increases the fineness and decreases the water content in the cement. Hence it saves the cost of,09. PPC cement prolongs the of concrete, hence help in better finishing of concrete.10.

What are the advantages of PPC in fresh concrete?

Advantages of PPC in Fresh Concrete. Portland pozzolana cement ( PPC ) has following advantages when concrete is in its fresh state. Portland pozzolana cement has spherical cement particles and they have higher fineness value. Due to the spherical shape concrete move more freely and more fineness of particles allows better filling of the pores.

What is the difference between PPC and ordinary cement?

4. Heat of Hydration – The hydration of PPC is a slower process than hydration of ordinary cement, resulting into slower heat generation and lower internal stresses in concrete. Thus PPC becomes ideal cement for mass concreting like dams, retaining walls, large foundation etc.

What are the advantages of Portland cement over other cement?

1. Workability – Portland pozzolana cement has spherical cement particles and they have higher fineness value. Due to the spherical shape concrete move more freely and more fineness of particles allows better filling of the pores. This type of cement also gives better cohesiveness to concrete.

What is the compressive strength of PPC cement?

Properties of Portland Pozzolana Cement: –

1. PPC cement has to be cured for a lot longer, as well as the curing temperature does have a major impact on the development of its strength, Whenever the temperature is low, the hardening process is sluggish. Although steam curing or humid heat treatment is being used, the hardening is intensified so that the cement isn’t really ideal for winter building.
2. The initial strength of the PPC cement is smaller, however the final strength is high. That’s also owing to the effective silica in the pozzolanic substance reacting with the calcium hydroxide in order to create a significant volume of hydrated calcium silicate.
3. The water demand for PPC cement is strong since the mixture content is porous and the fine particles are fine, The water demand of normal consistency differs with the form and quantity of the mixture.
4. Portland pozzolana cement has a reasonably long fixed period, the initial set time takes at least half an hour, and the actual set time requires at most 10 hours.
5. The drying contraction of Portland pozzolana cement does not reach 0.15 percent.
6. The fineness of pozzolana cement must not be much less than 300 m 2 /kg.
7. PPC cement has a strong compressive strength and can cross 13 MPa in 3 days, 22 MPa in 7 days and 33 MPa in 28 days.
8. The hydration and hydration levels of PPC cement are low, which is due to the variety and quantity of mixed materials.
9. PPC cement has a high tolerance to sulfate in acidic water and carbonic acid environments.

Also, Read: H-Beam vs I-Beam | What Is H-Beam | What Is I-Beam

Nehru Baral