LC3 stands for Limestone Calcined Clay Cement. It is a combination of clinker, calcined clay, limestone and gypsum. The cement blend uses 50% clinker, 15% non-cement grade (high silica or high MgO content) limestone, 30% calcined low grade china clay (non-ceramic grade) from mines and 5% gypsum.
700-800°C, almost half the temperature required for clinker production
40% less compared to OPC at lower investment
Limestone with impurities such as dolomite and quartz can be used without calcination
Can be reduced upto 50%
Saves up to 25% compared to OPC and PPC
Reduces GHG emissions from the cement industry
Develops ultimate strengths comparable to OPCs produced using the same clinker
Produces denser microstructure concrete compared to OPC and PPC
Opportunity to utilize low grade clay and limestone (dolomitic)
Low temperature of calcination and softer nature of raw materials reduces grinding energy
BIS Standard for LC3 was released in June 2023. For more information click here