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Difference between OPC and PPC cement?

OPC (Ordinary Portland Cement) and PPC (Portland Pozzolana Cement) are two types of cement that are commonly used in construction. Here are the main differences between them:

OPC (Ordinary Portland Cement)

1. Composition: OPC is made from a mixture of limestone, clay,and gypsum.

2. Properties: OPC has high early strength, high heat of hydration,and moderate sulfate resistance.

3. Uses: OPC is commonly used for general construction, such as building foundations, walls, and floors.

4. Cost: OPC is generally less expensive than PPC.

PPC (Portland Pozzolana Cement)_

1. Composition: PPC is made froma mixture of OPC and pozzolanic materials, such as fly ash or silica fume.

2. Properties: PPC has lower early strength, lower heat of hydration, and higher sulfate resistance than OPC.

3. Uses: PPC is commonly used for construction projects that require high durability, such as marine structures, bridges, and high-rise buildings.

4. Cost: PPC is generally more expensive than OPC.

Key differences_

1. Strength: OPC has higher early strength than PPC, but PPC has higher long-term strength.

2. Heat of hydration: OPC has higher heat of hydration than PPC,which can lead to thermal cracking.

3. Sulfate resistance: PPC has higher sulfate resistance than OPC,which makes it more suitable for use in marine environments.

4. Workability: PPC has lower workability than OPC, which can make it more difficult to mix and place.

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