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Opc cement - PowerPoint PPT Presentation

What are the advantages and disadvantages of PPC over OPC?

What are the advantages and disadvantages of PPC over OPC?

Advantages It is economical as in PPC a part (25%) of costly clinker of OPC cement is replaced by cheaper pozzolanic material. Reduction in the production of calcium hydroxide as PPC cement consumes calcium hydroxide. Thus the calcium hydroxide is not produced as much as in the case of ordinary Portland cement. It generates less heat of hydration at a low rate than ordinary Portland cement. Reduction in permeability of PPC offers many other advantages, such as better durability than opc 53 cement. Disadvantages Less rate of development of strength initially than ordinary Portland cement. It reduces the resistance to corrosion of steel reinforcement due to alkalinity reduction. But it improves permeability of concrete considerably. Setting time is longer than opc 53 cement.

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What is the difference between opc cement and portland slag cement?

What is the difference between opc cement and portland slag cement?

Portland Slag Cement is a variation of Portland Cement. Slag materials namely fly ash, volcanic ash, are added to the Ordinary Portland Cement (OPC) so that it becomes Portland Slag Cement. Both are eco-friendly materials but Slag Cement uses natural and industrial waste thus reducing the environmental pollution. Slag Cement is cheaper than OPC cement. Slag Cement has low initial setting strength compared to OPC cement but hardens over a period of time with proper curing. To know more about the best OPC and portland slag cement, visit www.emamicement.com

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