We've two types of Cement
PPC is a type of blended cement. It consists of 15-35% pozzolanic material, 4% gypsum and the rest is clinker. PPC as per BIS code is equivalent to that of 33 grade. Since the pozzolanic material reacts with calcium hydroxide liberated by the hydrating Portland cement and forms cementatious compounds, PPC makes the concrete more impermeable and denser. It can be confidently employed in construction of hydraulic structures, marine works, mass concreting etc. It protects concrete against alkali-aggregate reaction. PPC is known for its superior durability and sustainability, making it an ideal choice for various construction projects.
Ordinary Portland Cement (OPC) is one of the most commonly used types of cement in the construction industry. It is a fundamental building material known for its versatility, durability, and strength. OPC is produced by grinding clinker, which is primarily composed of limestone (calcium carbonate) and other materials such as clay or shale, along with gypsum.
Know the diffrence between PPC and OPC 43
Feature/Aspect | PPC (Portland Pozzolana Cement) | OPC 43 (Ordinary Portland Cement 43 Grade) |
---|---|---|
Composition | Blend of Portland cement and pozzolanic materials (e.g., fly ash) | Pure Portland cement clinker with gypsum |
Durability | Higher durability due to better resistance to chemical attacks | Good durability but slightly less than PPC |
Strength Development | Slower strength development but higher long-term strength | Rapid strength development with high early strength |
Heat of Hydration | Lower heat of hydration, reducing the risk of thermal cracking | Higher heat of hydration, suitable for cold weather concreting |
Workability | Better workability and finishing properties | Good workability, commonly used in construction |
Sustainability | More eco-friendly due to the use of industrial by-products | Less sustainable compared to PPC |
Applications | Ideal for marine structures, mass concreting, and construction in aggressive environments | Ideal for precast products, high-rise buildings, and general construction |
Cost | Generally more cost-effective due to the inclusion of pozzolanic materials | Slightly more expensive due to pure clinker content |