Understanding PPC Cement PPC cement is a blend of ordinary Portland cement and pozzolana (a naturally occurring or industrial by-product rich in silica and alumina). This combination results in a cement that is stronger, more durable and more resistant to water penetration than traditional grey cement. Challenges of Cold Weather Construction Slower Setting Time: In cold weather, ... https://www.prismcement.com/blog/ppc-cement-in-cold-weather-conditions-best-practices-for-mixing-and-curing