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Calcined clay PPC cement is a type of blended cement that incorporates calcined clay as a pozzolanic material, enhancing the durability and strength of concrete. It is produced by mixing ordinary Portland cement with calcined clay, which reacts with calcium hydroxide in the presence of water to form compounds that contribute to the overall strength of the cement. This type of cement is known for its lower carbon footprint compared to traditional Portland cement.
| Composition | Ordinary Portland cement and calcined clay |
| Strength Grade | Typically 33 MPa to 53 MPa |
| Setting Time | Initial setting time: 30 to 120 minutes; final setting time: 600 to 900 minutes |
| Water-Cement Ratio | Typically 0.4 to 0.6 |
| Color | Light grey to off-white |
When selecting calcined clay PPC cement, consider the specific application requirements such as strength, setting time, and environmental conditions. It's important to specify the desired strength grade, any necessary certifications, and the quantity needed for your project. Additionally, inquire about the source of the calcined clay to ensure quality and performance standards are met.
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It offers improved durability, lower permeability, and reduced carbon emissions.
It typically has better resistance to sulfate attack and can enhance the longevity of concrete structures.
While versatile, it is best suited for projects requiring enhanced durability and sustainability.
When stored properly, it can last for several months, but it's best used within six months.
Yes, but proper curing methods should be followed to ensure optimal strength development.
Look for compliance with local and international standards for cement quality.