Types of cement classification is according to regulation NMX-C-414-ONNCCE-1999, which establishes the following:

According to its composition, types of cement could be:

According to its special characteristics, the type of cement could be:

According to its resistance, cements could:
Normal resistance of a cement is the minimum mechanical resistance to compression within 28 days and it is expressed as 20, 30 or 40 Newtons per square millimeter (N/mm2)

In a cement bag, cement classification will be integrated as follows:
Composition + Resistance + Special characteristic
Example 1: Cement OPC 40 R
This classification indicates that it is an Ordinary Portland Cement with high initial resistance.
Cement PBFSC 30 SR
This classification indicates that it is a cement with slag addition, with a normal resistance and sulfate resistance.
Cement PPC 30 LAR / LHH
This classification indicates that it is a Pozzolana Portland Cement with normal resistance, low alkali reactivity aggregate and low hydration heat.