Portland Limestone Cement (PKZ)

Portland limestone Cement is mixture of Clinker, limestone and gypsum that mixes and grinds in the mill with other in identified. This Cement was produced for the first time in France in 1979 according to European standard EN 197-1 and follow in other Cement factories in other countries specially Germany, produced mass production of this type Cement. While regular Portland Cement may contain up to 5% limestone, Portland Limestone Cement is manufactured by intergrinding Portland Cement Clinker with between 6% and 15% limestone. The Clinker used to make Portland Limestone Cement is the same Clinker used to manufacture regular Portland Cement. 

Performance 

The performance of Portland Limestone Cement is dependent on the quality of the limestone. Accordingly, limestone used in Portland Limestone Cement is tested for calcium carbonate content, clay content and total organic carbon content. Portland Limestone Cement performance specifications are similar to those of regular Portland Cement in that it must meet the same physical requirements. 

Energy Savings and Reduced Emissions

The introduction of Portland Limestone Cement to North America represents a proactive step by both the Cement and concrete industries to help mitigate climate change. Manufacturing Portland Limestone Cement results in up to 10% less CO₂ emissions as compared to manufacturing regular Portland Cement. Read more . . .