All Portland cement is mainly similar but there are eight types of cement that are manufactured to meet various physical and chemical requirements for specific applications:
- Type I is a general purpose Portland cement that is suitable for most uses.
- Type II is used for constructions in water or soil that contains moderate amounts of sulphate, or when heat build-up is a concern.
- Type III cement provides and supplies high strength at an early state, usually in a week or less.
- Type IV moderates heat produced by hydration that is used for massive concrete surfaces such as dams.
- Type V cement resists chemical attack by soil and water high in sulfates.
- Type IA, IIA and IIIA are cements used to make air-entrained concrete. They have the same properties as types I, II, and III, but with the exception of possessing small quantities of air-entrained materials shared and combined with them.