1.1 This specification covers eight types of portland cement, as follows (see Note 2):1.1.1 Type I—For use when the special properties specified for any other type are not required.1.1.2 Type IA—Air-entraining cement for the same uses as Type I, where air-entrainment is desired.1.1.3 Type II—For general use, more especially when moderate sulfate resistance or moderate heat of hydration is desired.1.1.4 Type IIA—Ai