TABLE OF CONTENTS Different types of portland cement are manufactured to meet specific purposes and job conditions.
Type I is a general-purpose cement used in pavements, slabs, and miscellaneous concrete pads and structures.
Type IA is used for normal concrete, to which an air-entraining admixture is added.
Type II creates a moderate sulfur-resistant product that is used where concrete might be exposed to groundwater that contains sulfates.
Type IIA is the same as Type II, but is suited for an air-entrainment admixture.
Type III is known as high early strength and generates high strength in a week or less.
Type IIIA is high early, to which an air-entrainment admixture is added.
Type IV cement produces low heat of hydration and is often used in mass pours, such as dam construction or thick mat slabs.
Type V is a high sulfate-resistant cement that finds application in concrete structures exposed to high sulfate-containing soils or groundwater.
White Portland cement is generally available in Type I or Type III only and gains its white color from the selection of raw materials containing negligible amounts of iron and magnesium oxide. White cement is mainly used as a constituent in architectural concrete.
