How To Identify Opc And Ppc Cement?

27.03.2023

Difference Between OPC and PPC Cement – The main differences in their characteristics and uses are –

Portland Pozzolana Cement is a variation of Ordinary Portland Cement. Pozzolana materials namely fly ash, volcanic ash, are added to the OPC so that it becomes PPC. Pozzolana materials are added to the cement in the ratio of 15% to 35% by weight.Both are ecofriendly materials but Pozzolana Cement uses natural and industrial waste thus reducing the environmental pollution.

OPC	PPC
It has higher strength than PPC in the initial stage.	The strength of PPC is good than OPC in long terms.
It has high heat of hydration making it unfavorable for mass concreting.	The hydration process is slower than OPC resulting low heat of hydration. Therefore, it is suitable for mass concreting.
The presence of sulphates, alkalies, chlorides, etc. is higher and less resistant than PPC.	It has low percentage of sulphate alkalis, chlorides, magnesia and free lime in its composition, which makes the concrete durable.
OPC is not favorable in aggressive weather.	Show greater resistance to aggressive weather.
OPC cement are available in three grades, such as 33 Grade, 43 Grade, 53 Grade	PPC is available in any specific grades.
It is slightly costlier than PPC.	Cheaper than OPC.

Conclusion: Both OPC and PPC are commonly used cements in construction. These days, PPC is used as a substitute of OPC. PPC is a variation of OPC which adds a mixture of a pozzolanic material that helps to enhance the strength of the concrete. PPC also brings down the amount of OPC requirement in making concrete.

Contents

- 0.0.1 What is the percentage of cement in OPC?

1 Where OPC is used in construction?

What is the percentage of cement in OPC?

What is PPC Cement & OPC Cement? – PPC Cement: Pozzolana is a natural or artificial material which contains silica in the reactive form. Portland Pozzolana Cement is cement manufactured by combining Pozzolanic materials. This cement comprises of OPC clinker, gypsum and pozzolanic materials in certain proportions.

The Pozzolanic materials include fly ash, volcanic ash, calcined clay or silica fumes.
These materials are added within a range of 15% to 35% by cement weight.
OPC Cement or Ordinary Portland Cement (OPC) is manufactured by grinding a mixture of limestone and other raw materials like argillaceous, calcareous, gypsum to a powder.

This cement is available in three types of grades, such as OPC 33 grade, OPC 43 grade and OPC 53 grade. OPC is the most commonly used cement in the world. This type of cement is preferred where fast pace of construction is done. However, the making of OPC has reduced to a great extent as blended cement like PPC has advantages, such as lower environmental pollution, energy consumption and more economical.

You might be interested: How To Calculate House Construction Cost In Bangalore?

Where OPC is used in construction?

How to Choose between OPC and PPC Cement for your Home Construction Projects? The choice of Cement is the most important decision in a construction project after the design mix. The right design mix and the cement type are very important for the strength and durability of the structure being constructed.

Today we are having severe water shortage in the cities and so the amount of water that can be used for curing and the number of days we can do curing has drastically reduced. We need to choose the cement based on the project type and location as well as the curing facilities available. The heat of hydration is the major need for the curing of concrete, this drives the choice of the cement.

The housing sector is the largest consumer of cement in India, it consumes close to 67% of the cement and India is the second-largest producer of cement in the world. There are primarily two types of cement- Ordinary Portland Cement (OPC) and Pozzolana Portland Cement.

Ordinary Portland Cement (OPC) is the most widely and commonly used cement in the world.
This type of cement is manufactured as a powder by mixing limestone and other raw materials which consist of argillaceous, calcareous, and gypsum.
It is preferred in places where there is a need for fast construction and setting time.

This cement is available in the market in three grades namely OPC 33, OPC 43, and OPC 53. These grades imply the maximum strength of the particular cement after 28 days.

OPC-33 Grade – It is not widely used can only be used for low-strength works like plastering. OPC-43 Grade – It is widely used in wall plastering, non-RCC works, pathways, and achieves 43 Megapascals of compression strength in 28 days. OPC 53-Grade – It is mostly used in RCC structures, buildings, pre-stressed concreting, 53 Grade attains 27 Mpa in 7days compared to 23 Mpa by 43-grade cement and achieves a final compression strength of 53 Megapascals in 28 days.

Where OPC is used – OPC is widely used for the construction of high-rise buildings, roads, dams, bridges, flyovers where high strength and the fast setting is required. Portland Pozzolana Cement (PPC) is manufactured by a combination of pozzolanic materials.

Pozzolana is an artificial or natural material that has silica in it in a reactive form. Along with pozzolanic materials in specific proportions, PPC also contains OPC clinker and gypsum. These pozzolanic materials include volcanic ash, calcined clay or silica fumes and fly ash which makes around 15% to 35% of cement weight.

You might be interested: How To Check Cement Manufacturing Date?

Flyash is primarily used in PPC cement. Where PPC is used- PPC is believed to be a future product considering its various applications in the construction industry and is more environment-friendly. They are suitable to use in hostile environmental conditions and are corrosion resistant.

They can be reliably utilized in the construction of marine structures, masonry mortars, and plastering, hydraulic structures. Besides, they are popularly used in mass concreting works, such as dykes, sewage pipes, dams, etc. PPC is also employed in all applications where OPC is also used. PPC is more widely being used in the housing sector as it is more environment-friendly due to the mix of 15%-30% fly ash and lower quantities of PPC bags are required to make concrete compared to OPC.

Amplify Mart supplies both OPC and PPC cement from top brands like Ramco, Orient, India Cements, Parasakthi, etc in Hyderabad along with other building materials like aggregates, sand, and bricks. Free delivery of above 100 bags of cement in Hyderabad.

What are the different grades of OPC?

Difference Between PPC And OPC Cement In Tabular Form –

BASIS OF COMPARISON	PPC CEMENT	OPC CEMENT
Description	PPC is a variation of OPC which includes a mixture of pozzolanic material which is known to increase the strength of concrete. The raw materials used for manufacturing of PPC is OPC, gypsum, pozzolanic material such as fly ash, rice husk ash, volcanic tuffs and pumicites, clay and shale etc.	OPC is produced simply by grinding limestone and secondary materials to a powder. The main raw materials used for manufacturing OPC is calcareous material, argillaceous material and gypsum.
Use	Best choice for mass concreting, plastering and masonry.	OPC is the most commonly used cement in construction, but not suitable for mass concreting due to its high heat of hydration.
Grades	There is no specific grade of PPC cement is available.	It is available in three grades, 33 Grade, 43 Grade and 53 Grade.
Chemical Resistance	It is highly resistant to sulphate attacks hence its prime use is in construction of dams, foundations, building near the sea shore, reservoirs, marine construction etc.	It has lower resistance against alkalis, sulphates, chlorides, carbonates etc.
Heat Generation	It has a slow hydration process and thus generates less heat than OPC.	Generates more heat than PPC in hydration reaction which makes it less suitable for mass casting.
Setting Time	Setting time of PPC is higher than OPC. Its initial setting time is 30 minutes and the final setting time is 600 minutes. Its slower setting time helps to get better finishing.	Setting time of OPC is lower than PPC. Its initial setting time is 30 minutes and final setting time is 280 minutes. Its faster setting time helps faster construction.
Cost	It is less costly than OPC, which makes it a better option for your residential constructions.	OPC cement is more costly than PPC.
Weather	It is favorable in aggressive weather.	It is not favorable in aggressive weather.
Strength	It has a higher strength than OPC over a long period of time.	Initial strength is higher than PPC.
Finiteness	PPC has finiteness of 300sqm/kg.	OPC has finiteness of 225 sqm/kg.

You might be interested: How To Remove White Cement From Wash Basin?

What is PPC concrete made of?

OPC VS PPC Cement | Difference in Hindi | Which Cement is Best and Why ??