1.1 This specification covers eight types of portland cement, as follows (see Note 2):
1.1.1 Type I8212;For use when the special properties specified for any other type are not required.
1.1.2 Type IA8212;Air-entraining cement for the same uses as Type I, where air-entrainment is desired.
1.1.3 Type II8212;For general use, more especially when moderate sulfate resistance or moderate heat of hydration is desired.
1.1.4 Type IIA8212;Air-entraining cement for the same uses as Type II, where air-entrainment is desired.
1.1.5 Type III8212;For use when high early strength is desired.
1.1.6 Type IIIA8212;Air-entraining cement for the same use as Type III, where air-entrainment is desired.
1.1.7 Type IV8212;For use when a low heat of hydration is desired.
1.1.8 Type V8212;For use when high sulfate resistance is desired.
Note 18212;Some cements are designated with a combined type classification, such as Type I/II, indicating that the cement meets the requirements of the indicated types and is being offered as suitable for use when either type is desired.
1.2 When both SI and inch-pound units are present, the SI units are the standard. The inch-pound units are approximations listed for information only.
1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.
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