What are the common types of cement?

The cement commonly used in concrete is general portland cement, national standard GB 175-2007. 1. General Portland cement * * *: There are six kinds: (1) Portland cement (Pⅰ, Pⅱ), (2) Ordinary Portland cement (P O), (3) Slag Portland cement (P S A, P S B), (4) Pozzolanic Portland cement (P P P) and.

2. Strength grade: (1) Portland cement has grades 42.5, 52.5 and 62.5; (2) Ordinary Portland cement has grades 42.5 and 52.5; (3) slag portland cement, (4) pozzolanic portland cement, (5) fly ash portland cement and (6) composite portland cement all have three grades: 32.5, 42.5 and 52.5.